(archaic) simple, unlearned.

(now chiefly historical) Very severe mental retardation. / A foolish utterance.

Idiom. / An overly literal translation of an idiom.

plural of idiotism

(obsolete) Rendered idiotic; befooled.

present participle of idiotize

plural of idiot board

(idiomatic, plural only) Mittens connected by yarn or string (idiot string (Canadian English)) running through one sleeve, along the back and out at the other sleeve of a coat, to prevent the mittens becoming lost. Generally worn by small children.

(automotive, slang) Any warning light or indicator on the dashboard of a car, designed to alert the driver to problems, such as the parking brake being on or the oil being low.

A person who exhibits an extraordinary ability in one subject (often mathematics) whilst being intellectually disabled in many other domains.