verb

déguiser

dress up

Changer son apparence avec des vêtements ou un masque pour ne pas être reconnu ou pour ressembler à un personnage.

Déguiser means to disguise someone or something, usually to change their appearance or conceal their identity.

It can refer to putting someone in a costume: Elle déguise son fils en pirate — “She dresses her son up as a pirate.”
Figuratively, it means to disguise or conceal the truth, a feeling, or an intention.
In the reflexive form, se déguiser means “to disguise oneself” or “to dress up.”

Déguiser is a regular -er verb. It is normally transitive: it takes a direct object, as in déguiser quelqu’un — “to disguise someone.”

It comes from the prefix dé- and guise , an old word meaning “manner” or “appearance.”

Synonyms

camoufler — to camouflage or conceal; it emphasizes making something difficult to notice.
masquer — to mask or hide; it does not necessarily involve changing appearance.
travestir — to disguise or misrepresent, especially by altering appearance or distorting the truth.

Antonyms