THESAURUS
Believe
accept, accept for gospel, accept implicitly, accredit, admit, allow, assume, be afraid, be certain, be pious, be religious, believe in, believe without reservation, buy, conceive, conclude, confide in, conjecture, consider, credit, daresay, deduce, deem, divine, dream, expect, fancy, fear God, feel, gather, give faith to, grant, have confidence in, have faith, have faith in, hold, hope in, imagine, infer, keep the faith, let, let be, love God, maintain, make believe, opine, place confidence in, place reliance in, prefigure, presume, presuppose, presurmise, pretend, provisionally accept, put faith in, put trust in, receive, reckon, rely on, rely upon, repose confidence in, repose in, repute, rest in, say, sense, set store by, suppose, surmise, suspect, swallow, swear by, take, take for, take for granted, take it, take on faith, take on trust, take stock in, take to be, think, trust, trust in, trust in God, trust to, understand
ROGET THESAURUS
Believe
Piety
VB
be pious, have faith, believe, receive Christ, revere, be converted, convert, edify, sanctify, keep holy, beatify, regenerate, inspire, consecrate, enshrine.
Belief
VB
believe, credit, give faith to, give credit to, credence to, see, realize, assume, receive, set down for, take for, have it, take it, consider, esteem, presume, count upon, depend upon, calculate upon, pin one's faith upon, reckon upon, lean upon, build upon, rely upon, rest upon, lay one's account for, make sure of, make oneself easy about, on that score, take on trust, take on credit, take for granted, take for gospel, allow some weight to, attach some weight to, know, know for certain, have know, make no doubt, doubt not, be, rest assured, persuade oneself, assure oneself, satisfy oneself, make up one's mind, give one credit for, confide in, believe in, put one's trust in, place in, repose in, implicit confidence in, take one's word for, at one's word, place reliance on, rely upon, swear by, regard to, think, hold, take, take it, opine, be of opinion, conceive, trow, ween, fancy, apprehend, have it, hold a belief, possess, entertain a belief, adopt a belief, imbibe a belief, embrace a belief, get hold of a belief, hazard, foster, nurture a belief, cherish a belief, have an opinion, hold an opinion, possess, entertain an opinion, adopt an opinion, imbibe an opinion, embrace an opinion, get hold of an opinion, hazard an opinion, foster an opinion, nurture an opinion, cherish an opinion, view as, consider as, take as, hold as, conceive as, regard as, esteem as, deem as, look upon as, account as, set down as, surmise, get it into one's head, take it into one's head, come round to an opinion, swallow, cause to be believed, satisfy, persuade, have the ear of, gain the confidence of, assure, convince, convict, convert, wean, bring round, bring over, win over, indoctrinate, cram down the throat, produce conviction, carry conviction, bring home to, drive home to, go down, find credence, pass current, be received, be current, possess, take hold of, take possession of the mind.
Supposition
VB
suppose, conjecture, surmise, suspect, guess, divine, theorize, presume, presurmise, presuppose, assume, fancy, wis, take it, give a guess, speculate, believe, dare say, take it into one's head, take for granted, imagine, put forth, propound, propose, start, put a case, submit, move, make a motion, hazard out, throw out a suggestion, put forward a suggestion, put forward conjecture, allude to, suggest, hint, put it into one's head, suggest itself, run in the head, marvel if, wonder if, wonder whether.