be•lieve/bɪˈliv/USA pronunciationv.[not: be + ~-ing], -lieved, -liev•ing.
[~ + object] to have faith in the truth of:I can't believe that story.[~ + (that) clause]I don't believe (that) the earth is flat.
to have confidence in the statements of (a person):[~ + object]If my daughter says she wasn't cheating, I believe her.
to hold as an opinion; suppose; think: [~ + (that) clause]I believe (that) they are out of town.[no object]Do you think they are coming? I believe so.
believe in, [~ + in + object]
to be sure of the truth or existence of:to believe in God.
to have faith in the reliability or honesty of; trust: I can help you only if you believe in me.
to accept that (something) is a good idea or is worthwhile:I believe in getting to work early.
be•liev•a•bil•i•ty/bɪˌlivəˈbɪlɪti/USA pronunciation be•liev•a•ble•ness, n.[uncountable]the believability of your story. be•liev•a•ble,adj.:Her story of rape is highly believable. be•liev•a•bly,adv. be•liev•er,n.[countable] be•liev•ing•ly,adv.
believe is a verb, belief is a noun, believable is an adjective:I don't believe you. Her religious beliefs guide her life. That story is not believable.
to have confidence in the truth, the existence, or the reliability of something, although without absolute proof that one is right in doing so:Only if one believes in something can one act purposefully.
to have confidence or faith in the truth of (a positive assertion, story, etc.); give credence to.
to have confidence in the assertions of (a person).
to have a conviction that (a person or thing) is, has been, or will be engaged in a given action or involved in a given situation:The fugitive is believed to be headed for the Mexican border.
to suppose or assume; understand (usually fol. by a noun clause):I believe that he has left town.
to be persuaded of the truth or existence of:to believe in Zoroastrianism; to believe in ghosts.
to have faith in the reliability, honesty, benevolence, etc., of:I can help only if you believe in me.