verb [ intrans. ]
push one’s lips or one’s bottom lip forward as an expression of petulant annoyance or in order to make oneself look sexually attractive : she lounged on the steps, pouting | [ trans. ] he shrugged and pouted his lips.
• (of a person’s lips) be pushed forward in such a way : her lips pouted provocatively.
a pouting expression : his lower lip protruded in a sulky pout.
ORIGIN Middle English (as a verb): perhaps from the base of Swedish dialect puta ‘be inflated.’ Compare with “pout”