an outward semblance that misrepresents the true nature of something
"the theatrical notion of disguise is always associated with catastrophe in his stories"
any attire that modifies the appearance in order to conceal the wearer's identity
"The spy slipped into a heavy trench coat and pulled up his hood to complete his disguise before walking past the guards."
the act of concealing the identity of something by modifying its appearance
"he is a master of disguise"
Material (such as clothing, makeup, a wig) used to alter one’s visual appearance in order to hide one's identity or assume another.
"The spy slipped the heavy cloak and fake beard onto his shoulders before stepping out of the alleyway to blend into the crowd."
To change the appearance of (a person or thing) so as to hide, or to assume an identity.
"The spy donned a fake mustache and altered his voice to completely disguise himself before walking into the crowded market."
The word comes from the Old French desguiser, meaning to change one's appearance. It combines the prefix des- with guise to convey the idea of altering how someone looks.