# setCustomPronoun:forLanguage:error: Sets a custom pronoun behavior for this morphology to apply to the given language. ``` - (BOOL) setCustomPronoun:(NSMorphologyCustomPronoun *) features forLanguage:(NSString *) language error:(NSError **) error; ``` ## Parameters `features` A [`NSMorphologyCustomPronoun`](/documentation/Foundation/NSMorphologyCustomPronoun) instance for the morphology to use. `language` The language the morphology applies the custom pronoun to. `error` On return, any error encountered while setting the custom pronoun, or `nil` if no error occurred. ## Return Value A Boolean value that indicates whether setting the custom pronoun succeeded. ## Discussion This method throws if the system doesn’t support custom pronouns for the given language, or if any of the required pronoun keys aren’t set. ## See Also [`+ (BOOL) isSupportedForLanguage:(NSString *) language;`](/documentation/Foundation/NSMorphologyCustomPronoun/isSupportedForLanguage:) Returns a Boolean value that indicates whether the given language supports setting custom pronouns. [`+ (NSArray *) requiredKeysForLanguage:(NSString *) language;`](/documentation/Foundation/NSMorphologyCustomPronoun/requiredKeysForLanguage:) Returns a collection of the custom pronoun keys required by this language. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)