Impostor

10 clues
Fake
Fraud
Stand-in
Pretender
Charlatan
Human phony
Charlatan, of a sort
Identity thief, e.g.
Wolf in sheep's clothing, e.g.
Charlatan — is to romp (anag)
Similar answers:
Abedtimestory
Achristmasstory
Aclothingstorewhere
Actorastor
Adepartmentstoreandhe
Adjustor
Admissionimpossible
Afterthestorm
Agoodstory
Ahistorydegree
Aimsadjustor
Alastor
Alikelystory
Allimportant
Almostimpossible
Alongstoryshort
Amazingstories
Americanhistory
Americanpastoral
Amoralhistories