Definition of "mighty"
mighty
adjective
comparative mightier, superlative mightiest
Accomplished by might; hence, extraordinary; wonderful.
Quotations
Under his ſpecial eie / Abſtemious I [Samson] grew up and thriv'd amain; / He led me on to mightieſt deeds / Above the nerve of mortal arm / Againſt the uncircumciſ'd, our enemies.
1671, John Milton, “Samson Agonistes, […]”, in Paradise Regain’d. A Poem. In IV Books. To which is Added, Samson Agonistes, London: […] J. M[acock] for John Starkey […], page 42, lines 637–638
adverb
not comparable
(colloquial) Very; to a high degree.
Quotations
The lady is not heard of, and the King mighty angry and the Lord sent to the Tower.
1665 June 7 (date written; Gregorian calendar), Samuel Pepys, Mynors Bright, transcriber, “May 28th, 1665 (Lord’s Day)”, in Henry B[enjamin] Wheatley, editor, The Diary of Samuel Pepys […], volume IV, London: George Bell & Sons […]; Cambridge: Deighton Bell & Co., published 1894
I was mighty glad that our entrance into the interior of Caprona had been inside a submarine rather than in any other form of vessel. I could readily understand how it might have been that Caprona had been invaded in the past by venturesome navigators without word of it ever reaching the outside world, for I can assure you that only by submarine could man pass up that great sluggish river, alive.
1918 September–November, Edgar Rice Burroughs, “The Land That Time Forgot”, in The Blue Book Magazine, Chicago, Ill.: Story-press Corp.; republished as chapter IV, in Hugo Gernsback, editor, Amazing Stories, (please specify |part=I, II, or III), New York, N.Y.: Experimenter Publishing, 1927,