Expressing is the act of conveying or communicating one's thoughts, feelings, or ideas. Its antonyms are terms that describe the opposite of expressing. The first antonym is suppressing, which means holding back or concealing one's emotions or thoughts. Another antonym for expressing is repressing, which is to restrain or prevent the expression of one's feelings or desires. The third antonym is withholding, which means refusing to share or express one's opinions or emotions. Finally, the term bottling up is used to describe the act of keeping one's emotions or feelings inside, without allowing them to be expressed to others.