diff --git a/core/INSTALL.sqlite.txt b/core/INSTALL.sqlite.txt
index e22aaa89c3cc2d7d639bcfc5f24469e7432783dc..96092c3760cbabcaf0be2ab2d73c88899cf02d19 100644
--- a/core/INSTALL.sqlite.txt
+++ b/core/INSTALL.sqlite.txt
@@ -20,13 +20,13 @@ SQLITE DATABASE CREATION
 The Drupal installer will create the SQLite database for you. The only
 requirement is that the installer must have write permissions to the directory
 where the database file resides. This directory (not just the database file) also
-has to remain writeable by the web server going forward for SQLite to continue to
+has to remain writable by the web server going forward for SQLite to continue to
 be able to operate.
 
 On the "Database configuration" form in the "Database file" field, you must
 supply the exact path to where you wish your database file to reside. It is
 strongly suggested that you choose a path that is outside of the webroot, yet
-ensure that the directory is writeable by the web server.
+ensure that the directory is writable by the web server.
 
 If you must place your database file in your webroot, you could try using the
 following in your "Database file" field:
diff --git a/core/INSTALL.txt b/core/INSTALL.txt
index 487e71d8ccd014c463ee56761c8b6273220d6585..910b5aaf123698a69ef8b44bb7138c71264b56e6 100644
--- a/core/INSTALL.txt
+++ b/core/INSTALL.txt
@@ -190,7 +190,7 @@ INSTALLATION
         chmod a+w sites/default/files
 
       Be sure to set the permissions for the default directory back after the
-      installation is finished! (Leave the files directory writeable.)
+      installation is finished! (Leave the files directory writable.)
       Sample command:
 
         chmod go-w sites/default
diff --git a/core/includes/install.core.inc b/core/includes/install.core.inc
index d610fdd25c03011a9934bd7022dad5462e6ad1f1..890c385a568a3070e9f28e0bd52bc9982bf32905 100644
--- a/core/includes/install.core.inc
+++ b/core/includes/install.core.inc
@@ -1020,7 +1020,7 @@ function install_display_output($output, $install_state) {
   // Prevent install.php from being indexed when installed in a sub folder.
   // robots.txt rules are not read if the site is within domain.com/subfolder
   // resulting in /subfolder/install.php being found through search engines.
-  // When settings.php is writeable this can be used via an external database
+  // When settings.php is writable this can be used via an external database
   // leading a malicious user to gain php access to the server.
   $noindex_meta_tag = [
     '#tag' => 'meta',
diff --git a/core/lib/Drupal/Component/PhpStorage/PhpStorageInterface.php b/core/lib/Drupal/Component/PhpStorage/PhpStorageInterface.php
index fb9194c98a1c5ecc0412bd08cfa00ec0ef098603..7a370d252acecbaf01b944fcbc15eaa1581bdb5c 100644
--- a/core/lib/Drupal/Component/PhpStorage/PhpStorageInterface.php
+++ b/core/lib/Drupal/Component/PhpStorage/PhpStorageInterface.php
@@ -52,7 +52,7 @@ public function load($name);
   public function save($name, $code);
 
   /**
-   * Whether this is a writeable storage.
+   * Whether this is a writable storage.
    *
    * @return bool
    */
diff --git a/core/lib/Drupal/Core/StreamWrapper/StreamWrapperInterface.php b/core/lib/Drupal/Core/StreamWrapper/StreamWrapperInterface.php
index a354785affbd6eff6c23bc6c32d823eaa929cf74..38a7758d0ade451d0a9b996ae796a4fbaaacb05b 100644
--- a/core/lib/Drupal/Core/StreamWrapper/StreamWrapperInterface.php
+++ b/core/lib/Drupal/Core/StreamWrapper/StreamWrapperInterface.php
@@ -45,7 +45,7 @@ interface StreamWrapperInterface extends PhpStreamWrapperInterface {
   const READ = 0x0004;
 
   /**
-   * Wrapper is writeable.
+   * Wrapper is writable.
    */
   const WRITE = 0x0008;
 
@@ -67,12 +67,12 @@ interface StreamWrapperInterface extends PhpStreamWrapperInterface {
   const HIDDEN = 0x000C;
 
   /**
-   * Hidden, readable and writeable using local files.
+   * Hidden, readable and writable using local files.
    */
   const LOCAL_HIDDEN = 0x000D;
 
   /**
-   * Visible, readable and writeable.
+   * Visible, readable and writable.
    */
   const WRITE_VISIBLE = 0x001C;
 
@@ -91,7 +91,7 @@ interface StreamWrapperInterface extends PhpStreamWrapperInterface {
   const NORMAL = 0x001C;
 
   /**
-   * Visible, readable and writeable using local files.
+   * Visible, readable and writable using local files.
    */
   const LOCAL_NORMAL = 0x001D;
 
diff --git a/core/modules/system/src/Form/FileSystemForm.php b/core/modules/system/src/Form/FileSystemForm.php
index 9bc5b92ef36175cf2b6dddfda160dda8799c5058..6ac279a4c07f2729b5a598a70f05a1d665988388 100644
--- a/core/modules/system/src/Form/FileSystemForm.php
+++ b/core/modules/system/src/Form/FileSystemForm.php
@@ -118,7 +118,7 @@ public function buildForm(array $form, FormStateInterface $form_state) {
       '#markup' => $this->fileSystem->getTempDirectory(),
       '#description' => t('A local file system path where temporary files will be stored. This directory should not be accessible over the web. This must be changed in settings.php.'),
     ];
-    // Any visible, writeable wrapper can potentially be used for the files
+    // Any visible, writable wrapper can potentially be used for the files
     // directory, including a remote file system that integrates with a CDN.
     $options = $this->streamWrapperManager->getDescriptions(StreamWrapperInterface::WRITE_VISIBLE);
 
diff --git a/core/tests/Drupal/FunctionalJavascriptTests/WebDriverTestBase.php b/core/tests/Drupal/FunctionalJavascriptTests/WebDriverTestBase.php
index 503974c928e2360a0d7689f6dcad55639d21b6b5..40b0a46c494eb3a75a667a8887d82d4acc8294dd 100644
--- a/core/tests/Drupal/FunctionalJavascriptTests/WebDriverTestBase.php
+++ b/core/tests/Drupal/FunctionalJavascriptTests/WebDriverTestBase.php
@@ -138,7 +138,7 @@ protected function assertJsCondition($condition, $timeout = 10000, $message = ''
    * Creates a screenshot.
    *
    * @param string $filename
-   *   The file name of the resulting screenshot including a writeable path. For
+   *   The file name of the resulting screenshot including a writable path. For
    *   example, /tmp/test_screenshot.jpg.
    * @param bool $set_background_color
    *   (optional) By default this method will set the background color to white.
diff --git a/core/tests/Drupal/KernelTests/Core/File/DirectoryTest.php b/core/tests/Drupal/KernelTests/Core/File/DirectoryTest.php
index 1726cc3527282ee55a7511b49fc99f732719c3bd..4338fe78aa07ac19e47b7feeac3f73740d0251c0 100644
--- a/core/tests/Drupal/KernelTests/Core/File/DirectoryTest.php
+++ b/core/tests/Drupal/KernelTests/Core/File/DirectoryTest.php
@@ -98,11 +98,11 @@ public function testFileCheckDirectoryHandling() {
 
       // Make directory read only.
       @$file_system->chmod($directory, 0444);
-      $this->assertFalse($file_system->prepareDirectory($directory, 0), 'Error reported for a non-writeable directory.', 'File');
+      $this->assertFalse($file_system->prepareDirectory($directory, 0), 'Error reported for a non-writable directory.', 'File');
 
       // Test directory permission modification.
       $this->setSetting('file_chmod_directory', 0777);
-      $this->assertTrue($file_system->prepareDirectory($directory, FileSystemInterface::MODIFY_PERMISSIONS), 'No error reported when making directory writeable.', 'File');
+      $this->assertTrue($file_system->prepareDirectory($directory, FileSystemInterface::MODIFY_PERMISSIONS), 'No error reported when making directory writable.', 'File');
     }
 
     // Test that the directory has the correct permissions.