The phrase "got off chest" is often used to describe the act of releasing one's pent-up emotions or opinions. Some antonyms for this phrase may include "repressed," "bottled up," or "held in." In situations where someone has not yet shared their true feelings, they may be described as "guarded," "reserved," or "withholding." Conversely, those who are quick to share their thoughts and feelings may be described as "outspoken," "forthcoming," or "open." By using different antonyms for the phrase "got off chest," we can gain a deeper understanding of the range of emotions and attitudes people may exhibit in different situations.