deceptivity /dɪsɛpˈtɪvɪti/ noun2 •The quality of being deceptive.My few senses long ago revealed to me their imperfections and deceptivity. — 1908 •(rare) Something that deceives.Alas, if he look to the Seen Powers only, he may as well quit the business; his No-thing will never rightly issue as a Thing, but as a Deceptivity, a Sham-thing, — which it had better not do! — 1843 formsdeceptivities