verb

• (transitive) To accept as true, particularly without absolute certainty (i.e., as opposed to knowing).
• (transitive) To accept that someone is telling the truth.
• (intransitive) To have religious faith; to believe in a greater truth.
• (transitive) To opine, think, reckon.
• (transitive with in)
• To ascribe existence to.
• To believe that (something) is right or desirable.
• To have confidence in the ability or power of.