The word "un-intimidated" is a term used to describe someone who is fearless and undeterred by challenges or intimidation. Some possible antonyms for "un-intimidated" could include words like "fearful", "timid", "withdrawn", "shy", "hesitant", or "uncertain". These antonyms suggest a lack of confidence or courage, which is the opposite of being un-intimidated. If you feel un-intimidated, you are more likely to take risks, speak your mind, and pursue your goals with determination. In contrast, those who are fearful or hesitant may struggle to assert themselves or overcome obstacles in their way.