Title: wp_unique_term_slug
Published: August 18, 2015
Last modified: February 24, 2026

---

# apply_filters( ‘wp_unique_term_slug’, string $slug, object $term, string $original_slug )

## In this article

 * [Parameters](https://developer.wordpress.org/reference/hooks/wp_unique_term_slug/?output_format=md#parameters)
 * [Source](https://developer.wordpress.org/reference/hooks/wp_unique_term_slug/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/hooks/wp_unique_term_slug/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/hooks/wp_unique_term_slug/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/hooks/wp_unique_term_slug/?output_format=md#wp--skip-link--target)

Filters the unique term slug.

## 󠀁[Parameters](https://developer.wordpress.org/reference/hooks/wp_unique_term_slug/?output_format=md#parameters)󠁿

 `$slug`string

Unique term slug.

`$term`object

Term object.

`$original_slug`string

Slug originally passed to the function for testing.

## 󠀁[Source](https://developer.wordpress.org/reference/hooks/wp_unique_term_slug/?output_format=md#source)󠁿

    ```php
    return apply_filters( 'wp_unique_term_slug', $slug, $term, $original_slug );
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/taxonomy.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/taxonomy.php#L3178)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/taxonomy.php#L3178-L3178)

## 󠀁[Related](https://developer.wordpress.org/reference/hooks/wp_unique_term_slug/?output_format=md#related)󠁿

| Used by | Description | 
| [wp_unique_term_slug()](https://developer.wordpress.org/reference/functions/wp_unique_term_slug/)`wp-includes/taxonomy.php` |

Makes term slug unique, if it isn’t already.

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/hooks/wp_unique_term_slug/?output_format=md#changelog)󠁿

| Version | Description | 
| [4.3.0](https://developer.wordpress.org/reference/since/4.3.0/) | Introduced. |

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