fictional(invented, as opposed to real) adjective [UK: ˈfɪk.ʃn̩əl] [US: ˈfɪk.ʃn̩əl]The story I'm about to tell is completely fictional. = La historia que voy a contar es completamente ficticia.
fictitious(invented) adjective [UK: fɪk.ˈtɪ.ʃəs] [US: fɪk.ˈtɪ.ʃəs]All characters appearing in this work are fictitious. Any resemblance to real persons, living or dead, is purely coincidental. = Todos los personajes que aparecen en esta obra son ficticios. Cualquier parecido con personas reales, vivas o muertas, es puramente accidental.
ficticioadjective {m}; fingido {m}
sham(intended to deceive) adjective [UK: ʃæm] [US: ˈʃæm]