Definify.com
Webster 1913 Edition
Accede
Ac-cede′
,Verb.
 I.
 [
imp. & p. p. 
Acceded
; p. pr. & vb. n. 
Acceding
.] 1. 
To approach; to come forward; – opposed to 
recede
. [Obs.] 
T. Gale.
 2. 
To enter upon an office or dignity; to attain. 
Edward IV., who had 
acceded 
to the throne in the year 1461. T. Warton.
If Frederick had 
acceded to the supreme power
. Morley.
3. 
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 requestThe treaty of Hanover in 1725 . . . to which the Dutch afterwards 
acceded
. Chesterfield.
Syn. – To agree; assent; consent; comply; acquiesce; concur. 
Webster 1828 Edition
Accede
ACCE'DE
,Verb.
I.
  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.Definition 2025
accede
accede
English
Verb
accede (third-person singular simple present accedes, present participle acceding, simple past and past participle acceded)
- (archaic, intransitive) To approach; to arrive, to come forward. [15th-19th c.]
 - (intransitive, now rare) To give one's adhesion; to join up with (a group, etc.); to become part of. [from 15th c.]
 - (intransitive) To agree or assent to a proposal or a view; to give way. [from 16th c.]
 -  (intransitive) To come to an office, state or dignity; to attain, assume (a position). [from 18th c.]
-  2002, Colin Jones, The Great Nation, Penguin 2003, p. 32:
- Maintenon had been governess to the children in the late 1670s before acceding to the king's favours.
 
 
 -  2002, Colin Jones, The Great Nation, Penguin 2003, p. 32:
 - (intransitive) To become a party to an agreement or a treaty.
 
Usage notes
(to agree, to come to an office, to become a party to): Use with the word to afterwards ie. accede to.
Synonyms
- agree, acquiesce, assent, comply, concur, consent, concede, (obsolete) comprobate, (obsolete) astipulate
 
Derived terms
Translations
obsolete: to approach
to enter upon an office or dignity
to join a group
  | 
to agree to a proposal or view
  | 
References
- accede in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913