masquerade

Noun

• making a false outward show
  • a beggar's masquerade of wealth
    

• a costume worn as a disguise at a masquerade party

• a party of guests wearing costumes and masks

Verb

• pretend to be someone or something that you are not
  • he is masquerading as an expert on the internet
    
  • This silly novel is masquerading as a serious historical treaty
    

• take part in a masquerade

Related words

• Synonyms: 
  fancy dress , masquerade costume , masquerade party , masque , mask