believe

American Heritage® Dictionary of the English Language, Fourth Edition

1. v. To accept as true or real: Do you believe the news stories?
2. v. To credit with veracity: I believe you.
3. v. To expect or suppose; think: I believe they will arrive shortly.
4. v. To have firm faith, especially religious faith.
5. v. To have faith, confidence, or trust: I believe in your ability to solve the problem.
6. v. To have confidence in the truth or value of something: We believe in free speech.
7. v. To have an opinion; think: They have already left, I believe.
8. idiom. believe (one's) ears To trust what one has heard.
9. idiom. believe (one's) eyes To trust what one has seen.

Century Dictionary and Cyclopedia

1. To have faith or confidence. As to a person, to have confidence in his honesty, integrity, virtue, powers, ability, etc.; trust.
2. To exercise trust or confidence; rely through faith: generally with on.
3. To be persuaded of the truth of anything; accept a doctrine, principle, system, etc., as true, or as an object of faith: with in: as, “I believe in the Holy Ghost, the holy Catholic Church, the communion of saints,” etc., Apostles' Crecd; to believe in Buddhism. See belief.
4. To credit upon the ground of authority, testimony, argument, or any other ground than complete demonstration; accept as true; give credence to. See belief.
5. To give credence to (a person making a statement, anything said, etc.).
6. To expect or hope with confidence; trust.
7. To be of opinion; think; understand: as, I believe he has left the city.

Wiktionary

1. v. transitive To think something is true without having proof or empirical evidence.
2. v. transitive To accept that someone is telling the truth.
3. v. transitive To accept as true.
4. v. intransitive To have religious faith; to believe in a greater truth.
5. v. transitive To consider likely.

GNU Webster's 1913

1. v. To exercise belief in; to credit upon the authority or testimony of another; to be persuaded of the truth of, upon evidence furnished by reasons, arguments, and deductions of the mind, or by circumstances other than personal knowledge; to regard or accept as true; to place confidence in; to think; to consider.
2. v. To have a firm persuasion, esp. of the truths of religion; to have a persuasion approaching to certainty; to exercise belief or faith.
3. v. To think; to suppose.

WordNet 3.0

1. v. follow a credo; have a faith; be a believer
2. v. judge or regard; look upon; judge.
3. v. accept as true; take to be true
4. v. be confident about something
5. v. credit with veracity