verb

agree to agree to take something that is offered to you

to accept an invitation/offer

admit to admit that something is true, often something unpleasant

He refuses to accept that he's made a mistake.

allow to join to allow someone to join an organisation or become part of a group

She's been accepted by two universities.

understand to understand that you cannot change a very sad or unpleasant situation

The hardest part is accepting the fact that you'll never see that person again.