opine UK /ə(ʊ)ˈpaɪn/US /oʊˈpaɪn/verb 3noun 1forms 4 verb3 •To express an opinion; to state as an opinion; to suppose, consider (that).I opined that matters would soon become considerably worse."Your decisions," she opined, "have been unfailingly disastrous for this company." •To give one's formal opinion (on or upon something).I had to opine on the situation because I thought a different perspective was in order. •To suppose, consider as correct, or entertain, an opinion.Do you, Maister Francis, opine that ye will re-establish your father's credit by cutting your kinsman's thrapple, or getting your ain sneckit instead thereof in the College-yards of Glasgow? — 1817 noun1 •Any of a class of organic compounds, derived from amino acids, found in some plant galls. formsopined · opining · opines · opineth