a. [ L. factitius, fr. facere to make. See Fact, and cf. Fetich. ] Made by art, in distinction from what is produced by nature; artificial; sham; contrived; formed by, or adapted to, an artificial or conventional, in distinction from a natural, standard or rule; not natural; as, factitious cinnabar or jewels; a factitious taste. -- Fac-ti"tious*ly, adv. -- Fac*ti"tious*ness, n. [ 1913 Webster ]

He acquires a factitious propensity, he forms an incorrigible habit, of desultory reading. De Quincey.

Syn. -- Unnatural. -- Factitious, Unnatural. Anything is unnatural when it departs in any way from its simple or normal state; it is factitious when it is wrought out or wrought up by labor and effort, as, a factitious excitement. An unnatural demand for any article of merchandise is one which exceeds the ordinary rate of consumption; a factitious demand is one created by active exertions for the purpose. An unnatural alarm is one greater than the occasion requires; a factitious alarm is one wrought up with care and effort. [ 1913 Webster ]