Identity concealer is a term used to describe methods of hiding one's true identity. DISGUISE, ALIAS, and MASK are all terms used to refer to identity concealers. DISGUISE is an 8 letter word meaning to change one's appearance or behavior in order to hide one's identity. An ALIAS is a 5 letter word meaning an assumed name used to hide one's true identity. Lastly, a MASK is a 4 letter word meaning a covering worn over the face to hide one's identity.