diff --git a/CMake/unix-cache.cmake b/CMake/unix-cache.cmake
index e69ea5f608..c1cefc7953 100644
--- a/CMake/unix-cache.cmake
+++ b/CMake/unix-cache.cmake
@@ -256,7 +256,7 @@ set(HAVE_STRINGS_H 1)
 if(_CURL_OLD_LINUX)
   set(HAVE_STROPTS_H 1)
 else()
-  set(HAVE_STROPTS_H 0)  # glibc 2.30 or newer. https://sourceware.org/legacy-ml/libc-alpha/2019-08/msg00029.html
+  set(HAVE_STROPTS_H 0)  # glibc 2.30 or higher. https://sourceware.org/legacy-ml/libc-alpha/2019-08/msg00029.html
 endif()
 set(HAVE_STRUCT_SOCKADDR_STORAGE 1)
 set(HAVE_STRUCT_TIMEVAL 1)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 548cd2271b..cf4b8da5cc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -883,7 +883,7 @@ endif()
 if(CURL_USE_MBEDTLS)
   find_package(MbedTLS MODULE REQUIRED)
   if(MBEDTLS_VERSION VERSION_LESS 3.2.0)
-    message(FATAL_ERROR "mbedTLS v3.2.0 or newer is required.")
+    message(FATAL_ERROR "mbedTLS v3.2.0 or higher is required.")
   endif()
   set(_ssl_enabled ON)
   set(USE_MBEDTLS ON)
@@ -917,7 +917,7 @@ if(CURL_USE_WOLFSSL)
   set(_curl_ca_bundle_supported TRUE)
 
   if(USE_OPENSSL AND WOLFSSL_VERSION VERSION_LESS 5.7.6)
-    message(FATAL_ERROR "wolfSSL 5.7.6 or newer is required to coexist with OpenSSL.")
+    message(FATAL_ERROR "wolfSSL 5.7.6 or higher is required to coexist with OpenSSL.")
   endif()
 
   set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS "WOLFSSL_OPTIONS_IGNORE_SYS")
@@ -963,7 +963,7 @@ if(CURL_USE_RUSTLS)
     endif()
   endif()
   if(NOT HAVE_RUSTLS_SUPPORTED_HPKE)
-    message(FATAL_ERROR "rustls-ffi library does not provide rustls_supported_hpke function. Required version is 0.15 or newer.")
+    message(FATAL_ERROR "rustls-ffi library does not provide rustls_supported_hpke function. Required version is 0.15 or higher.")
   endif()
 
   if(CURL_DEFAULT_SSL_BACKEND AND CURL_DEFAULT_SSL_BACKEND STREQUAL "rustls")
@@ -1002,7 +1002,7 @@ if(ZSTD_FOUND)
     set(HAVE_ZSTD ON)
     list(APPEND CURL_LIBS CURL::zstd)
   else()
-    message(WARNING "zstd v1.0.0 or newer is required, disabling zstd support.")
+    message(WARNING "zstd v1.0.0 or higher is required, disabling zstd support.")
   endif()
 endif()
 
diff --git a/docs/INSTALL-CMAKE.md b/docs/INSTALL-CMAKE.md
index 1d8cd15a29..342ebe3d9d 100644
--- a/docs/INSTALL-CMAKE.md
+++ b/docs/INSTALL-CMAKE.md
@@ -224,7 +224,7 @@ target_link_libraries(my_target PRIVATE CURL::libcurl)
 - `IMPORT_LIB_SUFFIX`:                      Import library suffix. Default: `_imp` for MSVC-like toolchains, otherwise empty.
 - `LIBCURL_OUTPUT_NAME`:                    Basename of the curl library. Default: `libcurl`
 - `PICKY_COMPILER`:                         Enable picky compiler options. Default: `ON`
-- `SHARE_LIB_OBJECT`:                       Build shared and static libcurl in a single pass (requires CMake 3.12 or newer). Default: `ON` for Windows
+- `SHARE_LIB_OBJECT`:                       Build shared and static libcurl in a single pass (requires CMake 3.12 or higher). Default: `ON` for Windows
 - `STATIC_LIB_SUFFIX`:                      Static library suffix. Default: (empty)
 
 ## Root CA options
diff --git a/docs/RUSTLS.md b/docs/RUSTLS.md
index ed032f7fb6..3677259e47 100644
--- a/docs/RUSTLS.md
+++ b/docs/RUSTLS.md
@@ -56,7 +56,7 @@ Once downloaded, build `curl` using `--with-rustls` and the path to the extracte
 Building `rustls-ffi` from source requires both a rust compiler, and the [cargo-c] cargo plugin.
 
 To install a Rust compiler, use [rustup] or your package manager to install
-the **1.73** or newer toolchain.
+the **1.73** or higher toolchain.
 
 To install `cargo-c`, use your [package manager][cargo-c pkg], download
 [a pre-built archive][cargo-c prebuilt], or build it from source with `cargo install cargo-c`.
diff --git a/lib/asyn-ares.c b/lib/asyn-ares.c
index d17a6038e2..c01fae5f17 100644
--- a/lib/asyn-ares.c
+++ b/lib/asyn-ares.c
@@ -61,12 +61,12 @@
 #include <ares.h>
 
 #if ARES_VERSION < 0x011000
-#error "requires c-ares 1.16.0 or newer"
+#error "requires c-ares 1.16.0 or higher"
 #endif
 
 #ifdef USE_HTTPSRR
 #if ARES_VERSION < 0x011c00
-#error "requires c-ares 1.28.0 or newer for HTTPSRR"
+#error "requires c-ares 1.28.0 or higher for HTTPSRR"
 #endif
 #define HTTPSRR_WORKS
 #endif
diff --git a/lib/asyn-base.c b/lib/asyn-base.c
index 62cb0effe4..e565e84224 100644
--- a/lib/asyn-base.c
+++ b/lib/asyn-base.c
@@ -69,7 +69,7 @@ timediff_t Curl_async_timeleft_ms(struct Curl_easy *data,
 #ifdef USE_ARES
 
 #if ARES_VERSION < 0x011000
-#error "requires c-ares 1.16.0 or newer"
+#error "requires c-ares 1.16.0 or higher"
 #endif
 
 /*
diff --git a/lib/content_encoding.c b/lib/content_encoding.c
index fd08077259..d4246223ab 100644
--- a/lib/content_encoding.c
+++ b/lib/content_encoding.c
@@ -65,7 +65,7 @@
 #ifdef HAVE_LIBZ
 
 #if !defined(ZLIB_VERNUM) || (ZLIB_VERNUM < 0x1252)
-#error "requires zlib 1.2.5.2 or newer"
+#error "requires zlib 1.2.5.2 or higher"
 #endif
 
 typedef enum {
diff --git a/lib/url.c b/lib/url.c
index 8da2aca924..95b288f1e6 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -545,7 +545,7 @@ static bool xfer_may_multiplex(const struct Curl_easy *data,
 
     if(Curl_multiplex_wanted(data->multi) &&
        (data->state.http_neg.allowed & (CURL_HTTP_V2x | CURL_HTTP_V3x)))
-      /* allows HTTP/2 or newer */
+      /* allows HTTP/2 or higher */
       return TRUE;
   }
 #else
diff --git a/lib/vtls/wolfssl.c b/lib/vtls/wolfssl.c
index be2b755f0b..ddc9d124b9 100644
--- a/lib/vtls/wolfssl.c
+++ b/lib/vtls/wolfssl.c
@@ -37,7 +37,7 @@
 #error "wolfSSL version should be at least 5.0.0"
 #endif
 #if defined(OPENSSL_COEXIST) && LIBWOLFSSL_VERSION_HEX < 0x05007006
-#error "wolfSSL 5.7.6 or newer is required to coexist with OpenSSL"
+#error "wolfSSL 5.7.6 or higher is required to coexist with OpenSSL"
 #endif
 
 /* To determine what functions are available we rely on one or both of:
diff --git a/m4/curl-confopts.m4 b/m4/curl-confopts.m4
index d3e1a33b6b..3fcb0f9fd0 100644
--- a/m4/curl-confopts.m4
+++ b/m4/curl-confopts.m4
@@ -1,4 +1,4 @@
-#***************************************************************************
+,#***************************************************************************
 #                                  _   _ ____  _
 #  Project                     ___| | | |  _ \| |
 #                             / __| | | | |_) | |
@@ -441,7 +441,7 @@ AC_DEFUN([CURL_CHECK_LIB_ARES], [
     LDFLAGSPC="$clean_LDFLAGSPC $ares_LDFLAGS"
     LIBS="$ares_LIBS $clean_LIBS"
 
-    dnl check if c-ares new enough, 1.16.0 or newer
+    dnl check if c-ares new enough, 1.16.0 or higher
     AC_CHECK_FUNC([ares_getaddrinfo],
     [
     ],[
diff --git a/m4/xc-am-iface.m4 b/m4/xc-am-iface.m4
index 069490159b..956a2d77fe 100644
--- a/m4/xc-am-iface.m4
+++ b/m4/xc-am-iface.m4
@@ -64,7 +64,7 @@ dnl This macro embeds automake machinery into configure
 dnl script regardless of automake version used in order
 dnl to generate configure script.
 dnl
-dnl When using automake version 1.14 or newer, automake
+dnl When using automake version 1.14 or higher, automake
 dnl initialization option 'subdir-objects' is used to
 dnl generate the configure script, otherwise this option
 dnl is not used.