Idiotism
Pronunciation : Id"i*ot*ism
Part of Speech : n.
Etymology : [F. idiotisme, L. idiotismus the way of fashion of a private person, the common or vulgar manner of speaking, Gr. Idiot.]
Definition : 1. An idiom; a form, mode of expression, or signification, peculiar to a language. Scholars sometimes give terminations and idiotisms, suitable to their native language, unto words newly invented. M. Hale.
2. Lack of knowledge or mental capacity; idiocy; foolishness. Worse than mere ignorance or idiotism. Shaftesbury. The running that adventure is the greatist idiotism. Hammond.
Source : Webster's Unabridged Dictionary, 1913