mighty /ˈmaɪti/adjective 5adverb 1noun 1forms 3phrases 1 adjective5 •very strong and full of powerHe's a mighty wrestler, but you are faster than him. •Very heavy and powerful.Thor swung his mighty hammer.He gave the ball a mighty hit. •Accomplished by might; hence, extraordinary; wonderful.His mighty works — 1611 •(informal) Excellent, extremely good.Tonight's a mighty opportunity to have a party.She's a mighty cook. •Very large; hefty.Having listened attentively to the statement of Wandle Schoonhoven, giving an occasionable grunt, as he shovelled a mighty spoonful of Indian pudding into his mouth […] — 1809 adverb1 •(informal) Very; to a high degree.You can leave that food in your locker for the weekend, but it's going to smell mighty bad when you come back on Monday.Pork chops boiled with turnip greens make a mighty fine meal. noun1 •(no longer used, rare) A warrior of great strength and courage.And after him was Eleazar the son of Dodo, the Ahohite, who was one of the three mighties. — 1611 formsmighties · mightier · mightiest Phrases with mighty high and mightyOverbearingly arrogant; ostentatiously self-important or self-aggrandizing.