adjective/fa.la.sjø/
fallacious (characterized by fallacy; false or mistaken); deceptive, disingenuous
“Ces jeunes filles fallacieuses nous firent faire une route bien étrange ; - il faut ajouter qu'il pleuvait.” — These deceptive young girls made us take quite the strange road;—it should be added that it was raining.
Synonyms: mensonger, spécieux, captieux, trompeur
Inherited from Middle French, borrowed from Latin fallaciōsus.