diff --git a/src/wp-includes/class-wp-taxonomy.php b/src/wp-includes/class-wp-taxonomy.php
index 9c6c1d7caa..3c45eb1e8d 100644
--- a/src/wp-includes/class-wp-taxonomy.php
+++ b/src/wp-includes/class-wp-taxonomy.php
@@ -228,6 +228,24 @@ final class WP_Taxonomy {
 	 */
 	public $rest_controller;
 
+	/**
+	 * Whether terms in this taxonomy should be sorted in the order they are provided to `wp_set_object_terms()`.
+	 *
+	 * Use this in combination with `'orderby' => 'term_order'` when fetching terms.
+	 *
+	 * @since 2.5.0
+	 * @var bool|null
+	 */
+	public $sort = null;
+
+	/**
+	 * Array of arguments to automatically use inside `wp_get_object_terms()` for this taxonomy.
+	 *
+	 * @since 2.6.0
+	 * @var array|null
+	 */
+	public $args = null;
+
 	/**
 	 * Whether it is a built-in taxonomy.
 	 *
@@ -304,6 +322,8 @@ final class WP_Taxonomy {
 			'rest_controller_class' => false,
 			'default_term'          => null,
 			'_builtin'              => false,
+			'sort'                  => null,
+			'args'                  => null,
 		);
 
 		$args = array_merge( $defaults, $args );
diff --git a/src/wp-includes/taxonomy.php b/src/wp-includes/taxonomy.php
index 623144e5f0..ab2960fa98 100644
--- a/src/wp-includes/taxonomy.php
+++ b/src/wp-includes/taxonomy.php
@@ -414,6 +414,10 @@ function is_taxonomy_hierarchical( $taxonomy ) {
  *         @type string $slug         Slug for default term. Default empty.
  *         @type string $description  Description for default term. Default empty.
  *     }
+ *     @type bool          $sort                  Whether terms in this taxonomy should be sorted in the order they are
+ *                                                provided to `wp_set_object_terms()`. Default null which equates to false.
+ *     @type array         $args                  Array of arguments to automatically use inside `wp_get_object_terms()`
+ *                                                for this taxonomy.
  *     @type bool          $_builtin              This taxonomy is a "built-in" taxonomy. INTERNAL USE ONLY!
  *                                                Default false.
  * }