The word "most unloyal" suggests a lack of loyalty or faithfulness, and its antonyms could be words that imply loyalty, devotion, or steadfastness. Some antonyms for "most unloyal" could be "faithful," "committed," "devoted," "loyal," "dependable," "trustworthy," or "reliable." These words are used to describe individuals who remain loyal and maintain a strong sense of steadfastness even in tough times. They show their loyalty through their actions and always stand by their principles. Antonyms for "most unloyal" help to highlight the importance of remaining steadfast and loyal even when the going gets tough.