sham

nouns

something that is a counterfeit; not what it seems to be
fake, postiche, sham
a person who makes deceitful pretenses
fake, faker, fraud, imposter, impostor, pretender, pseud, pseudo, role player, sham, shammer

verbs

make a pretence of
"She assumed indifference, even though she was seething with anger"; "he feigned sleep"
assume, feign, sham, simulate
is derived from
shammer
is derived from
shammer
make believe with the intent to deceive
"He feigned that he was ill"; "He shammed a headache"
affect, dissemble, feign, pretend, sham
is derived from
shammer
is derived from
shammer

adjectives

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"
assumed, false, fictitious, fictive, pretended, put on, sham