diff --git a/ape/macros.internal.h b/ape/macros.internal.h
index f620f8261..973602a60 100644
--- a/ape/macros.internal.h
+++ b/ape/macros.internal.h
@@ -54,7 +54,7 @@
 	jmp	297f
 	.byte	0xbf			# mov $0x????xxxx,%edi
 	.long	\address
-297:	
+297:
 .endm
 
 //	Loads 16-bit CONSTEXPR into Qw-register w/ optional zero-extend.
diff --git a/libc/bits/xmmintrin.internal.h b/libc/bits/xmmintrin.internal.h
index bcdf2942a..3ea24c713 100644
--- a/libc/bits/xmmintrin.internal.h
+++ b/libc/bits/xmmintrin.internal.h
@@ -185,7 +185,7 @@ typedef float __m128_u _Vector_size(16) forcealign(1) mayalias;
 #define _mm_movehl_ps(M128_0, M128_1)                        \
   ((__m128)__builtin_shufflevector((__v4sf)(__m128)(M128_0), \
                                    (__v4sf)(__m128)(M128_1), 6, 7, 2, 3))
-/* instrinsics unstable & constantly breaking, consider ansi c or asm. */
+/* intrinsics unstable & constantly breaking, consider ansi c or asm. */
 /* each version of llvm has a different incompatible impl for this one */
 #else
 #define _mm_movehl_ps(M128_0, M128_1)                       \
diff --git a/libc/log/log.mk b/libc/log/log.mk
index 57e8523bd..34a3b4338 100644
--- a/libc/log/log.mk
+++ b/libc/log/log.mk
@@ -8,7 +8,7 @@ LIBC_LOG = $(LIBC_LOG_A_DEPS) $(LIBC_LOG_A)
 LIBC_LOG_A = o/$(MODE)/libc/log/log.a
 LIBC_LOG_A_FILES :=					\
 	$(wildcard libc/log/thunks/*)			\
-	$(wildcard libc/log/*)	
+	$(wildcard libc/log/*)
 LIBC_LOG_A_HDRS = $(filter %.h,$(LIBC_LOG_A_FILES))
 LIBC_LOG_A_SRCS_C = $(filter %.c,$(LIBC_LOG_A_FILES))
 LIBC_LOG_A_SRCS_S = $(filter %.S,$(LIBC_LOG_A_FILES))
diff --git a/libc/mem/cxx/free.S b/libc/mem/cxx/free.S
index 9d3264658..aeb057bb3 100644
--- a/libc/mem/cxx/free.S
+++ b/libc/mem/cxx/free.S
@@ -63,7 +63,7 @@ _ZdaPvSt11align_val_t:
 	nop
 //	𝑠𝑙𝑖𝑑𝑒
 	.endfn	_ZdaPvSt11align_val_t,weak
-_ZdaPvm:	
+_ZdaPvm:
 //	operator delete[](void*, unsigned long):
 	nop
 //	𝑠𝑙𝑖𝑑𝑒
diff --git a/libc/nexgen32e/kcp437.S b/libc/nexgen32e/kcp437.S
index 59f0e0bf9..e25ccf861 100644
--- a/libc/nexgen32e/kcp437.S
+++ b/libc/nexgen32e/kcp437.S
@@ -48,11 +48,11 @@
 //	    ▄██▀▄▄░░▀▐▄████▄ █████▀▄░░█▀▄▀░░  ▄██░
 //	    █████▄▄▄███▀░█▌██▄▀▀█████▄▄░░░▄▄███▀██▄ ▄▀▀▀▄▄
 //	     ▀██████▀■▄█▄▄ ░▀███████████████▓▓░░▄██▀▄████▄▄▀▄
-//	
+//
 //	    █▀█ █  █▀█ █▀█ █▄▀ ▐▀█▀▌█▀█ █▀█ █▄ █ ▀█▀ █▀█ █▀▀
 //	    █▀▄ █  █ █ █   █ ▀▄  █  █▀▄ █ █ █ ▀█  █  █   ▀▀█
 //	    █▄█ █▄▌█▄█ █▄█ █  █  █  █ █ █▄█ █  █ ▄█▄ █▄█ █▄█
-//	
+//
 //	    THERE WILL BE BLOCKS               march 01 2017
 //
 //	@see	libc/str/str.h
diff --git a/libc/nexgen32e/lolendian.S b/libc/nexgen32e/lolendian.S
index b1c9b9b34..c15e47fc2 100644
--- a/libc/nexgen32e/lolendian.S
+++ b/libc/nexgen32e/lolendian.S
@@ -47,7 +47,7 @@ htobe32:
 htole32:
 be32toh:
 le32toh:
-ntohl:	
+ntohl:
 htonl:	mov	%edi,%eax
 	bswap	%eax
 	ret
@@ -64,7 +64,7 @@ htobe16:
 htole16:
 be16toh:
 le16toh:
-ntohs:	
+ntohs:
 htons:	movzwl	%di,%eax
 	xchg	%al,%ah
 	ret
diff --git a/libc/nexgen32e/sha256ni.S b/libc/nexgen32e/sha256ni.S
index 8f09478ec..018d90f01 100644
--- a/libc/nexgen32e/sha256ni.S
+++ b/libc/nexgen32e/sha256ni.S
@@ -75,7 +75,7 @@ Tim Chen <tim.c.chen@linux.intel.com>\n"
 //	    void sha256_transform_ni(uint32_t digest[static 8],
 //	                             const void *data,
 //	                             int32_t numBlocks);
-//	
+//
 //	@param	%rdi points to output digest
 //	@param	%rsi points to input data
 //	@param	%rdx is number of blocks to process
diff --git a/libc/nt/nt/file.h b/libc/nt/nt/file.h
index 2fb214b79..051f3bae3 100644
--- a/libc/nt/nt/file.h
+++ b/libc/nt/nt/file.h
@@ -64,7 +64,7 @@ NtStatus NtWriteFile(int64_t FileHandle, void *opt_Event,
 NtStatus NtDuplicateObject(int64_t SourceProcessHandle, void *SourceHandle,
                            void *TargetProcessHandle,
                            void **opt_out_TargetHandle, uint32_t DesiredAcess,
-                           uint32_t Atrributes, uint32_t options_t);
+                           uint32_t Attributes, uint32_t options_t);
 
 NtStatus NtQueryInformationFile(int64_t FileHandle,
                                 struct NtIoStatusBlock *out_IoStatusBlock,
diff --git a/libc/rand/poz.c b/libc/rand/poz.c
index b8d6113d7..f96065696 100644
--- a/libc/rand/poz.c
+++ b/libc/rand/poz.c
@@ -83,7 +83,7 @@ poz(const double z)  /*VAR normal z value */
 #define	BIGX           20.0         /* max value to represent exp (x) */
 #define	ex(x)             (((x) < -BIGX) ? 0.0 : exp(x))
 
-/*FUNCTION pochisq: probability of chi sqaure value */
+/*FUNCTION pochisq: probability of chi square value */
 /*ALGORITHM Compute probability of chi square value.
 	Adapted from:
 		Hill, I. D. and Pike, M. C.  Algorithm 299
diff --git a/libc/runtime/getinterpreterexecutablename.c b/libc/runtime/getinterpreterexecutablename.c
index 51aa209e3..f9262f07a 100644
--- a/libc/runtime/getinterpreterexecutablename.c
+++ b/libc/runtime/getinterpreterexecutablename.c
@@ -26,7 +26,7 @@
 #include "libc/sysv/errfuns.h"
 
 /**
- * Returns path of executable interperter.
+ * Returns path of executable interpreter.
  *
  * Unlike `program_executable_name` which is designed to figure out the
  * absolute path of the first argument passed to `execve()`, what we do
diff --git a/libc/runtime/morph.greg.c b/libc/runtime/morph.greg.c
index 06135ad19..3538dc844 100644
--- a/libc/runtime/morph.greg.c
+++ b/libc/runtime/morph.greg.c
@@ -64,7 +64,7 @@ static privileged void __morph_mprotect(void *addr, size_t size, int prot,
 }
 
 /**
- * Begins code morphing execuatble.
+ * Begins code morphing executable.
  *
  * @return 0 on success, or -1 w/ errno
  */
@@ -97,7 +97,7 @@ privileged void __morph_begin(void) {
 }
 
 /**
- * Begins code morphing execuatble.
+ * Begins code morphing executable.
  */
 privileged void __morph_end(void) {
   int ax;
diff --git a/libc/sock/kntwsadata.c b/libc/sock/kntwsadata.c
index b078756b1..9c635dce1 100644
--- a/libc/sock/kntwsadata.c
+++ b/libc/sock/kntwsadata.c
@@ -30,7 +30,7 @@
 #define VERSION 0x0202 /* Windows Vista+ */
 
 /**
- * Information about underyling Windows Sockets implemmentation.
+ * Information about underlying Windows Sockets implementation.
  *
  * Cosmopolitan automatically calls YOINK() on this symbol when its
  * Berkeley Socket wrappers are linked. The latest version of Winsock
diff --git a/libc/stdio/appendr.c b/libc/stdio/appendr.c
index b29f0e067..ca64ac593 100644
--- a/libc/stdio/appendr.c
+++ b/libc/stdio/appendr.c
@@ -41,7 +41,7 @@
  * filled with NUL characters. If `i` is less than the current length
  * then memory is released to the system.
  *
- * The resulting buffer is guarranteed to be NUL-terminated, i.e.
+ * The resulting buffer is guaranteed to be NUL-terminated, i.e.
  * `!b[appendz(b).i]` will be the case even if both params are 0.
  *
  * @return `i` or -1 if `ENOMEM`
diff --git a/libc/stdio/fgets.c b/libc/stdio/fgets.c
index 7bcb05ada..3c6040838 100644
--- a/libc/stdio/fgets.c
+++ b/libc/stdio/fgets.c
@@ -27,7 +27,7 @@
  *
  * @param s is output buffer
  * @param size is capacity of s
- * @param f is non-null file oject stream pointer
+ * @param f is non-null file object stream pointer
  * @return s on success, NULL on error, or NULL if EOF happens when
  *     zero characters have been read
  * @see fgets_unlocked()
diff --git a/libc/stdio/fgets_unlocked.c b/libc/stdio/fgets_unlocked.c
index 85d7ebc57..9870a22b0 100644
--- a/libc/stdio/fgets_unlocked.c
+++ b/libc/stdio/fgets_unlocked.c
@@ -28,7 +28,7 @@
  *
  * @param s is output buffer
  * @param size is capacity of s
- * @param f is non-null file oject stream pointer
+ * @param f is non-null file object stream pointer
  * @return s on success, NULL on error, or NULL if EOF happens when
  *     zero characters have been read
  */
diff --git a/libc/str/explicit_bzero.S b/libc/str/explicit_bzero.S
index 96a707de0..85bceff5c 100644
--- a/libc/str/explicit_bzero.S
+++ b/libc/str/explicit_bzero.S
@@ -23,7 +23,7 @@
 //	This is intended for security-conscious applications.
 //
 //	@param	rdi is dest
-//	@param	rsi is the number of bytes to set	
+//	@param	rsi is the number of bytes to set
 explicit_bzero:
 	jmp	bzero
 	.endfn	explicit_bzero,globl
diff --git a/libc/stubs/gcov.S b/libc/stubs/gcov.S
index c7f0598dd..8f7261345 100644
--- a/libc/stubs/gcov.S
+++ b/libc/stubs/gcov.S
@@ -20,7 +20,7 @@
 
 //	Magic words to unbreak build if GCOV flags are passed.
 
-__gcov_init:	
+__gcov_init:
 	ret
 	.endfn	__gcov_init,globl,weak
 
@@ -28,7 +28,7 @@ __gcov_exit:
 	ret
 	.endfn	__gcov_exit,globl,weak
 
-__gcov_merge_add:	
+__gcov_merge_add:
 	ret
 	.endfn	__gcov_merge_add,globl,weak
 
diff --git a/libc/sysv/consts.sh b/libc/sysv/consts.sh
index 6689a02fa..3d24dfe05 100755
--- a/libc/sysv/consts.sh
+++ b/libc/sysv/consts.sh
@@ -581,8 +581,8 @@ syscon	sicode	SYS_USER_DISPATCH			2			-1			-1			-1			-1			-1			# SIGSYS; syscall
 #	sigaltstack() values
 #
 #	group	name					GNU/Systemd		XNU's Not UNIX!		FreeBSD			OpenBSD			NetBSD			The New Technology	Commentary
-syscon	ss	SIGSTKSZ				8192			131072			34816			28672			28672			8192			# overlayed with STACKSIZE; you need to #undef SIGSTKSZ to access this symbol
-syscon	ss	MINSIGSTKSZ				2048			32768			2048			12288			8192			2048			# overlayed with 32768; you need to #undef MINSIGSTKSZ to access this symbol
+syscon	ss	SIGSTKSZ				8192			131072			34816			28672			28672			8192			# overlaid with STACKSIZE; you need to #undef SIGSTKSZ to access this symbol
+syscon	ss	MINSIGSTKSZ				2048			32768			2048			12288			8192			2048			# overlaid with 32768; you need to #undef MINSIGSTKSZ to access this symbol
 syscon	ss	SS_ONSTACK				1			1			1			1			1			1			# unix consensus
 syscon	ss	SS_DISABLE				2			4			4			4			4			2			# bsd consensus
 
diff --git a/libc/thread/mktls.c b/libc/thread/mktls.c
index c6f1498c5..d527b4f0f 100644
--- a/libc/thread/mktls.c
+++ b/libc/thread/mktls.c
@@ -41,7 +41,7 @@ char *_mktls(char **out_tib) {
   // organized _Thread_local data, as well as Cosmpolitan Libc (64)
   if (!(tls = calloc(1, _MEMZ))) return 0;
 
-  // set up thread informaiton block
+  // set up thread information block
   tib = (cthread_t)(tls + _MEMZ - _TIBZ);
   tib->self = tib;
   tib->self2 = tib;
diff --git a/libc/tinymath/cbrtc.c b/libc/tinymath/cbrtc.c
index 011487f8e..066c6a392 100644
--- a/libc/tinymath/cbrtc.c
+++ b/libc/tinymath/cbrtc.c
@@ -52,7 +52,7 @@ double __cbrt(double x) {
    * error of about 1 in 16.  Adding a bias of -0.03306235651 to the
    * (e%3+m)/3 term reduces the error to about 1 in 32. With the IEEE
    * floating point representation, for finite positive normal values,
-   * ordinary integer divison of the value in bits magically gives
+   * ordinary integer division of the value in bits magically gives
    * almost exactly the RHS of the above provided we first subtract the
    * exponent bias (1023 for doubles) and later add it back.  We do the
    * subtraction virtually to keep e >= 0 so that ordinary integer
diff --git a/libc/tinymath/gamma.c b/libc/tinymath/gamma.c
index 39d0c2471..40b67b171 100644
--- a/libc/tinymath/gamma.c
+++ b/libc/tinymath/gamma.c
@@ -63,7 +63,7 @@ asm(".include \"libc/disclaimer.inc\"");
  *                          = log(6.3*5.3) + lgamma(5.3)
  *                          = log(6.3*5.3*4.3*3.3*2.3) + lgamma(2.3)
  *   2. Polynomial approximation of lgamma around its
- *      minimun ymin=1.461632144968362245 to maintain monotonicity.
+ *      minimum ymin=1.461632144968362245 to maintain monotonicity.
  *      On [ymin-0.23, ymin+0.27] (i.e., [1.23164,1.73163]), use
  *              Let z = x-ymin;
  *              lgamma(x) = -1.214862905358496078218 + z^2*poly(z)
diff --git a/libc/tinymath/lgamma_r.c b/libc/tinymath/lgamma_r.c
index ac35db779..6f0a464c7 100644
--- a/libc/tinymath/lgamma_r.c
+++ b/libc/tinymath/lgamma_r.c
@@ -63,7 +63,7 @@ asm(".include \"libc/disclaimer.inc\"");
  *                          = log(6.3*5.3) + lgamma(5.3)
  *                          = log(6.3*5.3*4.3*3.3*2.3) + lgamma(2.3)
  *   2. Polynomial approximation of lgamma around its
- *      minimun ymin=1.461632144968362245 to maintain monotonicity.
+ *      minimum ymin=1.461632144968362245 to maintain monotonicity.
  *      On [ymin-0.23, ymin+0.27] (i.e., [1.23164,1.73163]), use
  *              Let z = x-ymin;
  *              lgamma(x) = -1.214862905358496078218 + z^2*poly(z)
diff --git a/libc/tinymath/rempio2large.c b/libc/tinymath/rempio2large.c
index 93f2c8d49..f55dbdd12 100644
--- a/libc/tinymath/rempio2large.c
+++ b/libc/tinymath/rempio2large.c
@@ -79,14 +79,14 @@ asm(".include \"libc/disclaimer.inc\"");
  *                      z    = (z-x[i])*2**24
  *
  *
- *      y[]     ouput result in an array of double precision numbers.
+ *      y[]     output result in an array of double precision numbers.
  *              The dimension of y[] is:
  *                      24-bit  precision       1
  *                      53-bit  precision       2
  *                      64-bit  precision       2
  *                      113-bit precision       3
  *              The actual value is the sum of them. Thus for 113-bit
- *              precison, one may have to do something like:
+ *              precision, one may have to do something like:
  *
  *              long double t,w,r_head, r_tail;
  *              t = (long double)y[2] + (long double)y[1];
@@ -117,7 +117,7 @@ asm(".include \"libc/disclaimer.inc\"");
  *              jk+1 must be 2 larger than you might expect so that our
  *              recomputation test works. (Up to 24 bits in the integer
  *              part (the 24 bits of it that we compute) and 23 bits in
- *              the fraction part may be lost to cancelation before we
+ *              the fraction part may be lost to cancellation before we
  *              recompute.)
  *
  *      jz      local integer variable indicating the number of
diff --git a/libc/x/xsigaction.c b/libc/x/xsigaction.c
index 3a64fda0f..dfd4a3596 100644
--- a/libc/x/xsigaction.c
+++ b/libc/x/xsigaction.c
@@ -43,7 +43,7 @@ int(xsigaction)(int sig, void *handler, uint64_t flags, uint64_t mask,
                 struct sigaction *old) {
   /* This API is superior to sigaction() because (1) it offers feature
      parity; (2) compiler emits 1/3rd as much binary code at call-site;
-     and (3) it removes typing that just whines without added saftey. */
+     and (3) it removes typing that just whines without added safety. */
   struct sigaction sa;
   bzero(&sa, sizeof(sa));
   sa.sa_handler = handler;
diff --git a/test/libc/calls/fcntl_test.c b/test/libc/calls/fcntl_test.c
index d368ca3a8..0292da9ec 100644
--- a/test/libc/calls/fcntl_test.c
+++ b/test/libc/calls/fcntl_test.c
@@ -47,7 +47,7 @@ TEST(fcntl_getfl, testRemembersAccessMode) {
 
 TEST(fcntl_setfl, testChangeAppendStatus) {
   if (IsWindows()) {
-    // no obivous way to do fcntl(fd, F_SETFL, O_APPEND)
+    // no obvious way to do fcntl(fd, F_SETFL, O_APPEND)
     return;
   }
   int fd;
diff --git a/test/libc/str/strcmp_test.c b/test/libc/str/strcmp_test.c
index 61db28ee4..9863bf5ac 100644
--- a/test/libc/str/strcmp_test.c
+++ b/test/libc/str/strcmp_test.c
@@ -606,7 +606,7 @@ BENCH(memcmp, bench) {
   volatile char *copy = gc(strdup(kHyperion));
   EZBENCH2("memcmp big", donothing,
            EXPROPRIATE(memcmp(kHyperion, copy, kHyperionSize)));
-  copy = gc(strdup("tought little ship"));
+  copy = gc(strdup("tough little ship"));
   EZBENCH2("memcmp 19", donothing,
-           EXPROPRIATE(memcmp("tought little ship", copy, 19)));
+           EXPROPRIATE(memcmp("tough little ship", copy, 19)));
 }
diff --git a/test/net/http/parsehttprange_test.c b/test/net/http/parsehttprange_test.c
index 27801b314..6a3f7e323 100644
--- a/test/net/http/parsehttprange_test.c
+++ b/test/net/http/parsehttprange_test.c
@@ -108,7 +108,7 @@ TEST(ParseHttpRange, testInvalidRange) {
   EXPECT_EQ(0, length);
 }
 
-TEST(ParseHttpRange, testOverflow_duringIntepretation_doesntSetRanges) {
+TEST(ParseHttpRange, testOverflow_duringInterpretation_doesntSetRanges) {
   long start, length;
   const char *s = "bytes=99-9223372036854775808";
   EXPECT_FALSE(ParseHttpRange(s, strlen(s), 100, &start, &length));
diff --git a/test/net/http/parseurl_test.c b/test/net/http/parseurl_test.c
index c4767de27..6011a8af5 100644
--- a/test/net/http/parseurl_test.c
+++ b/test/net/http/parseurl_test.c
@@ -257,7 +257,7 @@ TEST(ParseUrl, testEmptyParams_absentCanBeDiscerned) {
   ASSERT_NE(NULL, h.params.p);
 }
 
-TEST(ParseUrl, testWeirdAmps_areReprodicible) {
+TEST(ParseUrl, testWeirdAmps_areReproducible) {
   struct Url h;
   gc(ParseUrl("?&&", -1, &h));
   gc(h.params.p);
diff --git a/test/tool/plinko/library_test.lisp b/test/tool/plinko/library_test.lisp
index 0661f9b32..62a56887e 100644
--- a/test/tool/plinko/library_test.lisp
+++ b/test/tool/plinko/library_test.lisp
@@ -217,6 +217,6 @@
            (lambda (x)
              (lambda ()
                x))))))
-     ((error '(enclosed memory failed to propogate upward))))
+     ((error '(enclosed memory failed to propagate upward))))
   (ignore))
 
diff --git a/tool/decode/ent.c b/tool/decode/ent.c
index 856989371..e4b9fab11 100644
--- a/tool/decode/ent.c
+++ b/tool/decode/ent.c
@@ -13,10 +13,10 @@
 	Terse mode output, getopt() command line processing,
 	optional stdin input, and HTML documentation added in
 	October 1998.
-	
+
 	Documentation for the -t (terse output) option added
 	in July 2006.
-	
+
 	Replaced table look-up for chi square to probability
 	conversion with algorithmic computation in January 2008.