Accede

Webster's Dictionary

(1): (v. i.) To become a party by associating one's self with others; to give one's adhesion. Hence, to agree or assent to a proposal or a view; as, he acceded to my request.

(2): (v. i.) To enter upon an office or dignity; to attain.

(3): (v. i.) To approach; to come forward; - opposed to recede.

King James Dictionary

Acce'De, L. accedo, of ad and cedo, to yield or give place, or rather to move.

1. To agree or assent, as to a proposition, or to terms proposed by another. Hence in a negotiation. 2. To become a party, by agreeing to the terms of a treaty or convention.