The word "un-trusty" implies a lack of reliability or trustworthiness. Its antonyms are words that convey the opposite meaning, that is, something or someone that can be trusted or is reliable. These antonyms include "trustworthy," "reliable," "dependable," "honest," "faithful," "loyal," and "credible." These words can be used to describe individuals, organizations, and situations that inspire trust and confidence. Antonyms of "un-trusty" can also be used to describe behavior or actions that are trustworthy and dependable. By using these antonyms, writers can convey a positive tone and reassure their audience of the faith they place in a person or thing.