Verb

To harmonize in opinion, statement, or action; to be in unison or concord; to be or become united or consistent; to concur.

all parties agree in the expediency of the law.

* {{quote-book, year=1594

, author=Thomas Lodge , title=The wounds of civil war: Lively set forth in the true tragedies of Marius and Scilla , page=46 , passage=You know that in so great a state as this, Two mightie foes can never well agree .}}

* (rfdate) Shakespeare

If music and sweet poetry agree .

* (rfdate) Mark xiv. 56.

Their witness agreed not together.

* (rfdate) Sir T. Browne

The more you agree together, the less hurt can your enemies do you.

To yield assent; to accede;—followed by to.

to agree to an offer, or to opinion.

(transitive, UK, Irish) To yield assent to; to approve.

* {{quote-book, year=1666

, author=Samuel Pepys , title=The Diary of Samuel Pepys , page=88 , passage=... and there, after a good while in discourse, we did agree a bargain of £5,000 with Sir Roger Cuttance for my Lord Sandwich for silk, cinnamon, ...}}

* {{quote-book, year=2005

, author=Paddy McNutt , title=Law, economics and antitrust: towards a new perspective , page=59 , passage=The essential idea is that parties should enter the market, choose their contractors, set their own terms and agree a bargain.}}

* 2011 April 3, John Burke, in The Sunday Business Post :

Bishops agree sex abuse rules

To make a stipulation by way of settling differences or determining a price; to exchange promises; to come to terms or to a common resolve; to promise.

* (rfdate) Matt. v. 25.

Agree with thine adversary quickly.

* (rfdate) Matt. xx. 13.

Didst not thou agree with me for a penny ?

To be conformable; to resemble; to coincide; to correspond.

the picture does not agree with the original; the two scales agree exactly.

To suit or be adapted in its effects; to do well.

the same food does not agree with every constitution.

(grammar) To correspond to in gender, number, case, or person.

(legal) To consent to a contract or to an element of a contract.

Verb

To agree again.

(Webster 1913)