knuckle under vs accept

knuckle under and accept both are verbs.

Word	Noun	Adjective	Verb	Adverb
knuckle under	No	No	Yes	No
accept	No	No	Yes	No

As verbs, accept is a hypernym of knuckle under; that is, accept is a word with a broader meaning than knuckle under:

Other hypernyms of knuckle under include consent, go for.

knuckle under (verb)	accept (verb)
consent reluctantly	consider or hold as true
	react favorably to; consider right and proper
	tolerate or accommodate oneself to
	be sexually responsive to, used of a female domesticated mammal
	give an affirmative reply to; respond favorably to
	receive willingly something given or offered
	take on as one's own the expenses or debts of another person
	admit into a group or community
	receive (a report) officially, as from a committee
	make use of or accept for some purpose
	be designed to hold or take