disguise
n. C / Un. something you wear or use to change how you look so people do not recognize you. It is often a mix of different clothes, hair, or makeup.
n. a means of altering one's appearance or identity to conceal one's true nature or to deceive observers. Often involves the use of costumes, wigs, or cosmetic changes.
He wore a fake beard as a disguise.
The detective entered the party in a clever disguise, hoping to blend in with the wealthy guests.
The protagonist's elaborate disguise was so convincing that even his closest allies failed to identify him during the high-stakes operation at the embassy.
From Middle English disgisen, disguisen, borrowed from Old French desguiser (modern French déguiser), itself derived from des- (“dis-”) (from Latin dis-) + guise (“guise”) (from a Germanic source).
Countable when referring to a specific costume or set of items; uncountable when referring to the general state of being hidden.