Pretender
WordNet
noun
(1) 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
(2) A person who makes deceitful pretenses
(3) A claimant to the throne or to the office of ruler (usually without just title)
WiktionaryText
Noun
- A person who professes beliefs and opinions that he or she does not hold.
- A claimant to an abolished or already occupied throne.