Secretive is an adjective that describes something or someone that is cautious about revealing information. There are many synonyms for secretive that convey a similar sense of discretion or mystery. Examples of such words include covert, furtive, clandestine, cryptic, and enigmatic. The word covert suggests that something is kept hidden or concealed, while furtive implies a sense of guilt or stealthiness. Clandestine suggests something done in secrecy, while cryptic indicates something difficult to understand or decipher. Finally, enigmatic implies a sense of puzzlement or ambiguity. All of these synonyms for secretive convey a sense of concealment or reserve at their core.