masquerade
mas-que-rade
noun
A false show or pretence, or a social gathering where guests wear masks.
"The charity held a lavish masquerade ball."
verb
To pretend to be someone or something different, often to deceive others.
"He would masquerade as a doctor."
Thesaurus
Synonyms: masquerade costume, fancy dress, mask, masquerade party, masque, charade