The antonyms for the word "un-hitches" would be "hitches," "fastens," or "secures." These terms refer to the action of attaching or connecting something to another object or surface, which is the opposite of un-hitching. Hitches can be used to join two parts of a machine, tie a rope or cable to a post, or link a trailer to a vehicle, among other applications. Therefore, knowing the antonyms of un-hitches is useful when you need to describe actions that involve attaching or fixing objects together, whether it's for a practical or figurative purpose.