inhale (v.) Look up inhale at
1725, "to breathe in, draw air into the lungs," a back-formation from inhalation or else from French inhaler in this sense; used as a word to be the opposite of exhale. In form from Latin inhalare, but this meant "breathe upon," from in- "on, upon" (see in- (2)) + halare "breathe." Slang sense of "eat rapidly" is recorded from 1924. As a noun, "act of inhaling," by 1934. Related: Inhaled; inhaling.