masquerade
noun uk/ˌmæs.kərˈeɪd/ us/ˌmæs.kəˈreɪd/
(BEHAVIOUR)
[ C or U ]伪装;掩饰
behaviour that is intended to prevent the truth about something unpleasant or not wanted from becoming known
They kept up the masquerade of being happily married for over 30 years. 30多年来他们一直假装婚姻很幸福。