fictious /ˈfɪkʃəs/ adjective2 •(no longer used) Fictitious.Man does vvith dangerous Curiosity / These unfathom'd VVonders try: / VVith fancy'd Rules and Arbitrary Lavvs / Matter and Motion he restrains, / And study'd Lines and fictious Circles dravvs; […] — 1688 •(no longer used) Addicted to or characterized by fiction.