The word "un-quiet" can be considered as an antonym of the word "quiet". The term "un-quiet" refers to something that is not peaceful or is causing disturbance. Therefore, antonyms for "un-quiet" would be synonyms for "quiet" such as serene, calm, peaceful, tranquil, or still. Other antonyms for "un-quiet" could include words like loud or noisy. These words are opposites of "quiet" because they refer to something that is making a lot of sound or commotion. Ultimately, choosing the correct antonym for "un-quiet" depends on the context of the sentence and the specific connotation desired.