MEANING: noun: One who acts as if they know everything, dismissing others’ ideas or advice.

ETYMOLOGY: From Old English cnawan (to recognize, identify) + hit (it) + eall/all (all). Earliest documented use: 1873

KNOWITAL - a barbiturate that makes you omniscient

KIOWI TALL - slogan of a proud tribe of Native Americans from the central plains

KOWITALL - pertaining to phonetic copulation