sham
noun.
something that is a counterfeit; not what it seems to be
Synonym: fake, postiche
noun.
a person who makes deceitful pretenses
verb.
make a pretence of
She assumed indifference, even though she was seething with anger|he feigned sleep
Synonym: assume, feign, simulate
verb.
make believe with the intent to deceive
He feigned that he was ill|He shammed a headache
adj.
adopted in order to deceive
an assumed name|an assumed cheerfulness|a fictitious address|fictive sympathy|a pretended interest|a put-on childish voice|sham modesty