fabricated, fancied, fictional, fictitious -- (formed or conceived by the imagination; "a fabricated excuse for his absence"; "a fancied wrong"; "a fictional character")
assumed, false, fictitious, fictive, pretended, put on, sham -- (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")