unseat

1. (transitive) To dislodge or remove (someone) from a seat, especially on horseback.Examples: "The frightened horse reared up and unseated its rider."; "I was unseated from my bike after hitting an unexpected pothole."; "VVhom boldly I encountred (as I could) / And by good fortune ſhortly him vnſeated. / Eftſoones out ſprung two more of equall mould; / But I them both with equall hap defeated: […]"transitive

2. (transitive, figuratively)Examples: "After having lost her seat to a Tory, she succeeded in unseating him in the next general election."; "India has recently unseated China as the world’s most populous country."; "And thus thoſe Forts vvhich vvere erected to defend the Crovvne, firſt offended the King, ſome fevv vvhereof as he recouered, he flatted to the ground, and vviſhed the other no higher vvalls; ſtill ſvvearing by Gods Birth (his vſuall Oath) hee vvould not ſlightly bee vnſeated of his Crovvne, and vvondring vvhat ſhould mooue them, vvho had ſo readilie aduanced him, ſo ſpeedily to vnſtate him."Synonyms: depose, oust, overthrowAntonyms: appoint, enthrone, empower, installfigurativelytransitive

3. (transitive, figuratively)Examples: "The Michelson-Morley experiment prompted scientists to unseat their belief in the luminiferous aether."; "Printed newspapers are gradually being unseated by digital publications."; "Eleanor sank upon his bosom, and sobbed as if her heart were bursting with its transport; and poor Susan laughed and wept alternately, till Mr. Blandley, who by this time had heard of the occurrence and reached the court-room, was fearful that her reason would be totally unseated."Synonyms: oust, supersede, supplantAntonyms: confirm, preservefigurativelytransitive

4. (transitive, figuratively)Examples: "The Matrix (1999) utterly unseated audiences around the world with its mind-blowing plot twist."; "I was somewhat unseated by the strange noises outside my window."; ""Heart up, heart up, my boy!" he exclaimed. "The horrors of war must not unseat a soldier thus"—but the other interrupted him, muttering huskily: / "You did not see—not recognise?" and as he spoke the astonishment on his face was accompanied by a look of almost awestruck unbelief."figurativelytransitive

5. (intransitive, technical) To come off or out of a seat.Examples: "We replaced the screws, since the old ones unseated too easily."; "When the feed-valve unseats, air begins to enter the train line and the black hand moves up; […]"; "When the pump plunger is moved upward, the flat on top of the cup unseats from the flat on the plunger head and allows free movement of fuel through the inside of the cup into the bottom of the pump well."intransitive