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