The word "ex-pose" is commonly defined as the act of revealing, disclosing, or making known something that was previously secret or hidden. Antonyms for this word would therefore be terms that suggest concealment, secrecy, or lack of disclosure. Some possible antonyms for "ex-pose" might include words such as hide, cover up, obscure, or bury. Alternatively, one may use the term suppress, silence, or stifle to convey the opposite of exposing. Depending on the context in which it is used, one may choose to use a synonym or antonym to convey their intended message most clearly.