also: ひざまづく
godan verb (-ku), intransitive verb
kneel; genuflect
Used for kneeling down, typically as a gesture of respect, submission, or formal apology. Often implies a deliberate, respectful action rather than just being on one's knees.
彼は王の前にひざまずいた。
He knelt before the king.
謝罪の気
To express his apology, he knelt on the floor.