pretender - noun

a claimant to the throne or to the office of ruler (usually without just title)

a person who makes deceitful pretenses

a person who professes beliefs and opinions that he or she does not hold in order to conceal his or her real feelings or motives

pretender - thesaurus

dissembler   dissimulator   fake   faker   fraud   hypocrite   imposter   impostor   phoney   phony   pseud   pseudo   sham   shammer