1) Adopted in order to deceive 2) Assumed 3) Counterfeit 4) False 5) Fictitious 6) French word used in English 7) Imaginary 8) Imitative 9) Made-up 10) Pretended 11) Put on 12) Sham Found on https://www.crosswordclues.com/clue/fictive
Fic'tive adjective [ Confer French fictif .] Feigned; counterfeit. 'The fount of fictive tears.' Tennyson. Found on http://www.encyclo.co.uk/webster/F/25