agree

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To share an opinion or feeling; be in accord.
• intransitive verb To express consent; concur: synonym: assent.
• intransitive verb To accept or support a policy or program.
• intransitive verb To come to an understanding or agreement, as by negotiating.
• intransitive verb To be compatible or consistent: synonym: correspond.
• intransitive verb To be suitable, appropriate, pleasing, or healthful.
• intransitive verb Grammar To correspond in gender, number, case, or person.
• intransitive verb To share an opinion about (something).
• intransitive verb To grant or concede.

from The Century Dictionary.

• In good part; kindly; in a friendly manner.
• A. With a personal or personified subject, in which case agree is either used absolutely or is followed by with before the agreeing object, and by upon, on, for, to, or in, and sometimes with, before the object or condition of the agreement; the latter may be expressed by an infinitive or a clause.
• To be of one mind; harmonize in opinion or feeling: as, with regard to the expediency of the law all the parties agree.
• To live in concord or without contention; harmonize in action; be mutually accordant in intercourse or relation.
• To come to one opinion or mind; come to an arrangement or understanding; arrive at a settlement.
• To yield assent; consent; rarely, express concurrence: as, he agreed to accompany the ambassador.
• B. With a thing or things for the subject, in which case agree now takes no preposition except with or in after it, though formerly to was also so used.
• To be consistent; harmonize; not to conflict or be repugnant: as, this story agrees with what has been related by others.
• To resemble; be similar; be applicable or appropriate; tally; match; correspond; coincide: as, the picture does not agree with the original.
• To suit; be accommodated or adapted: as, the same food does not agree with every constitution.
• In grammar, to correspond in number, case, gender, or person: as, a verb must agree with its subject.
• To settle; determine; arrange.
• To agree with; suit.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To harmonize in opinion, statement, or action; to be in unison or concord; to be or become united or consistent; to concur.
• intransitive verb To yield assent; to accede; -- followed by to.
• intransitive verb 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.
• intransitive verb To be conformable; to resemble; to coincide; to correspond
• intransitive verb To suit or be adapted in its effects; to do well.
• intransitive verb (Gram.) To correspond in gender, number, case, or person.
• transitive verb obsolete To make harmonious; to reconcile or make friends.
• transitive verb obsolete To admit, or come to one mind concerning; to settle; to arrange

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb intransitive To harmonize in opinion, statement, or action; to be in unison or concord; to be or become united or consistent; to concur.
• verb intransitive To yield assent; to accede;—followed by to.
• verb transitive, UK, Ireland To yield assent to; to approve.
• verb intransitive 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.
• verb intransitive To be conformable; to resemble; to coincide; to correspond.
• verb intransitive To suit or be adapted in its effects; to do well.
• verb intransitive, grammar To correspond to in gender, number, case, or person.
• verb intransitive, law To consent to a contract or to an element of a contract.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb be in accord; be in agreement
• verb go together
• verb consent or assent to a condition, or agree to do something
• verb achieve harmony of opinion, feeling, or purpose
• verb show grammatical agreement
• verb be compatible, similar or consistent; coincide in their characteristics
• verb be agreeable or suitable