diff --git a/lib/asyn-ares.c b/lib/asyn-ares.c
index c01fae5f17..95adf122bf 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 higher"
+#error "requires c-ares 1.16.0 or greater"
 #endif
 
 #ifdef USE_HTTPSRR
 #if ARES_VERSION < 0x011c00
-#error "requires c-ares 1.28.0 or higher for HTTPSRR"
+#error "requires c-ares 1.28.0 or greater for HTTPSRR"
 #endif
 #define HTTPSRR_WORKS
 #endif
diff --git a/lib/asyn-base.c b/lib/asyn-base.c
index e565e84224..3c95a84138 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 higher"
+#error "requires c-ares 1.16.0 or greater"
 #endif
 
 /*
diff --git a/lib/content_encoding.c b/lib/content_encoding.c
index d4246223ab..e024f49a98 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 higher"
+#error "requires zlib 1.2.5.2 or greater"
 #endif
 
 typedef enum {
diff --git a/lib/curl_ntlm_core.c b/lib/curl_ntlm_core.c
index 78ceeb448f..0b418cbbbe 100644
--- a/lib/curl_ntlm_core.c
+++ b/lib/curl_ntlm_core.c
@@ -76,7 +76,7 @@
 #elif defined(USE_MBEDTLS) && defined(HAVE_MBEDTLS_DES_CRYPT_ECB)
 #  include <mbedtls/version.h>
 #  if MBEDTLS_VERSION_NUMBER < 0x03020000
-#  error "mbedTLS 3.2.0 or higher required"
+#  error "mbedTLS 3.2.0 or greater required"
 #  endif
 #  include <mbedtls/des.h>
 #  define USE_MBEDTLS_DES
diff --git a/lib/curl_setup.h b/lib/curl_setup.h
index 2909dae3ae..448e8da1ad 100644
--- a/lib/curl_setup.h
+++ b/lib/curl_setup.h
@@ -77,7 +77,7 @@
 
 #if defined(__MINGW32__) && \
   (!defined(__MINGW64_VERSION_MAJOR) || (__MINGW64_VERSION_MAJOR < 3))
-#error "Building curl requires mingw-w64 3.0 or higher"
+#error "Building curl requires mingw-w64 3.0 or greater"
 #endif
 
 /* Visual Studio 2010 is the minimum Visual Studio version we support.
@@ -182,7 +182,7 @@
 
 #ifdef HAVE_LIBZ
 #  ifndef ZLIB_CONST
-#  define ZLIB_CONST  /* Use z_const. Supported by v1.2.5.2 or higher. */
+#  define ZLIB_CONST  /* Use z_const. Supported by v1.2.5.2 or greater. */
 #  endif
 #endif
 
diff --git a/lib/hostip4.c b/lib/hostip4.c
index 713d3546c8..61405a50f4 100644
--- a/lib/hostip4.c
+++ b/lib/hostip4.c
@@ -204,7 +204,7 @@ struct Curl_addrinfo *Curl_ipv4_resolve_r(const char *hostname,
 #elif defined(HAVE_GETHOSTBYNAME_R_3)
   /* AIX, Digital UNIX/Tru64, HP-UX 10, more? */
 
-  /* For AIX 4.3 or higher, we do not use gethostbyname_r() at all, because of
+  /* For AIX 4.3 or greater, we do not use gethostbyname_r() at all, because of
    * the plain fact that it does not return unique full buffers on each
    * call, but instead several of the pointers in the hostent structs will
    * point to the same actual data! This have the unfortunate down-side that
@@ -214,7 +214,7 @@ struct Curl_addrinfo *Curl_ipv4_resolve_r(const char *hostname,
    * the plain old gethostbyname() work fine even for multi-threaded
    * programs.
    *
-   * This AIX 4.3 or higher detection is all made in the configure script.
+   * This AIX 4.3 or greater detection is all made in the configure script.
    *
    * Troels Walsted Hansen helped us work this out on March 3rd, 2003.
    *
diff --git a/lib/md5.c b/lib/md5.c
index fd3660df83..e7dfcae669 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -40,7 +40,7 @@
 #ifdef USE_MBEDTLS
 #include <mbedtls/version.h>
 #if MBEDTLS_VERSION_NUMBER < 0x03020000
-#error "mbedTLS 3.2.0 or higher required"
+#error "mbedTLS 3.2.0 or greater required"
 #endif
 #include <psa/crypto_config.h>
 #endif
@@ -157,8 +157,8 @@ static void my_md5_final(unsigned char *digest, void *ctx)
 #include <CommonCrypto/CommonDigest.h>
 
 /* For Apple operating systems: CommonCrypto has the functions we need.
-   These functions are available on 10.4 (Tiger) or higher, as well as
-   iOS 2.0 or higher. If you are building for an older cat, well, sorry.
+   These functions are available on 10.4 (Tiger) or greater, as well as
+   iOS 2.0 or greater. If you are building for an older cat, well, sorry.
 
    Declaring the functions as static like this seems to be a bit more
    reliable than defining COMMON_DIGEST_FOR_OPENSSL on older cats. */
diff --git a/lib/setup-vms.h b/lib/setup-vms.h
index 14dce26ecb..b5bc0ead2d 100644
--- a/lib/setup-vms.h
+++ b/lib/setup-vms.h
@@ -131,7 +131,7 @@ static char *vms_getenv(const char *envvar)
   /* may do a malloc(2048) for each call to getenv(), so you will need   */
   /* to add a free(vms_path) */
   /* Do not do a free() for DEC C RTL builds, which should be used for */
-  /* VMS 5.5-2 or higher, even if using GCC */
+  /* VMS 5.5-2 or greater, even if using GCC */
 
   return result;
 }
diff --git a/lib/sha256.c b/lib/sha256.c
index 805db63456..f602255012 100644
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -32,7 +32,7 @@
 #ifdef USE_MBEDTLS
 #include <mbedtls/version.h>
 #if MBEDTLS_VERSION_NUMBER < 0x03020000
-#error "mbedTLS 3.2.0 or higher required"
+#error "mbedTLS 3.2.0 or greater required"
 #endif
 #include <psa/crypto_config.h>
 #endif
diff --git a/lib/url.c b/lib/url.c
index 5bd3673a6f..6fb4921186 100644
--- a/lib/url.c
+++ b/lib/url.c
@@ -544,7 +544,7 @@ 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 higher */
+      /* allows HTTP/2 or greater */
       return TRUE;
   }
 #else
diff --git a/lib/version.c b/lib/version.c
index 18cf4459a6..608db30dfa 100644
--- a/lib/version.c
+++ b/lib/version.c
@@ -616,7 +616,7 @@ curl_version_info_data *curl_version_info(CURLversion stamp)
   }
 #endif
 #ifdef USE_LIBIDN2
-  /* This returns a version string if we use the given version or higher,
+  /* This returns a version string if we use the given version or greater,
      otherwise it returns NULL */
   version_info.libidn = idn2_check_version(IDN2_VERSION);
 #endif
diff --git a/lib/vssh/ssh.h b/lib/vssh/ssh.h
index 53c3df09de..607d3e8a2a 100644
--- a/lib/vssh/ssh.h
+++ b/lib/vssh/ssh.h
@@ -35,7 +35,7 @@ extern const struct Curl_protocol Curl_protocol_scp;
 #include <libssh2.h>
 #include <libssh2_sftp.h>
 #elif defined(USE_LIBSSH)
-/* in 0.10.0 or higher, ignore deprecated warnings */
+/* in 0.10.0 or greater, ignore deprecated warnings */
 #define SSH_SUPPRESS_DEPRECATED
 #include <libssh/libssh.h>
 #include <libssh/sftp.h>
@@ -220,7 +220,7 @@ struct ssh_conn {
 
 #ifdef USE_LIBSSH
 #if LIBSSH_VERSION_INT < SSH_VERSION_INT(0, 9, 0)
-#error "SCP/SFTP protocols require libssh 0.9.0 or higher"
+#error "SCP/SFTP protocols require libssh 0.9.0 or greater"
 #endif
 #endif