Make certain of.

synonyms: ensure, guarantee, insure, secure.

Roget 771: give security, give bail, give substantial bail; go bail; pawn, impawn^†, spout, mortgage, hypothecate, impignorate^†.    guarantee, warrant, warrantee, assure; accept, indorse, underwrite, insure; cosign, countersign, sponsor, cosponsor.    execute, stamp; sign, seal etc. (evidence) 467.    let, sett^†; grant a lease, take a lease, hold a lease; hold in pledge; lend on security etc. 787.    ... show more

Roget 535: assert; make an assertion etc. n.; have one's say; say, affirm, predicate, declare, state; protest, profess.    put forth, put forward; advance, allege, propose, propound, enunciate, broach, set forth, hold out, maintain, contend, pronounce, pretend.    depose, depone, aver, avow, avouch, asseverate, swear; make oath, take one's oath; make an affidavit, swear an affidavit, put in an affidavit; take one's Bible oath, kiss the book, vow, vitam impendere vero [Lat.]; swear till one is black in the face, swear till one is blue in the face, swear till all's blue; be sworn, call Heaven to witness; vouch, warrant, certify, assure, swear by bell book and candle.    swear by etc. (believe) 484; insist upon, take one's stand upon; emphasize, lay stress on; assert roundly, assert positively; lay down, lay down the law; raise one's voice, dogmatize, have the last word; rap out; repeat; reassert, reaffirm.    announce etc. (information) 527; acknowledge etc. (assent) 488; attest etc. (evidence) 467; adjure etc. (put to one's oath) 768.    ... show more

Roget 474: be certain etc. adj.; stand to reason.    render certain etc. adj.; insure, ensure, assure; clinch, make sure; determine, decide, set at rest, make assurance double sure" [Macbeth]; know etc. (believe) 484.    dogmatize, lay down the law.    ... show more

Roget 768: promise; give a promise etc. n.; undertake, engage; make an engagement, form an engagement; enter into an engagement, enter on an engagement; bind oneself, tie oneself, pledge oneself, commit oneself, take upon oneself; vow; swear etc. (affirm) 535, give one's word, pass one's word, pledge one's word, plight one's word, give one's honor, pass one's honor, pledge one's honor, plight one's honor, give credit, pass credit, pledge credit, plight credit, give troth, pass troth, pledge troth, plight troth; betroth, plight faith.    assure, warrant, guarantee; covenant etc. 769; attest etc. (bear witness) 467.    hold out an expectation; contract an obligation; become bound to, become sponsor for; answer for, be answerable for; secure; give security etc. 771; underwrite.    adjure, administer an oath, put to one's oath, swear a witness.    ... show more

Inform positively and with certainty and confidence.

synonym: tell.

Assure somebody of the truth of something with the intention of giving the listener confidence.

Dutch: verzekeren, overtuigen, persuaderen

Be careful or certain to do something; make certain of something.

synonyms: ascertain, check, control, ensure, insure, see, see to it.

Roget 484: 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 etc. adj.; 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 etc. n.. 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 etc. 514.    get it into one's head, take it into one's head; come round to an opinion; swallow etc. (credulity) 486.    cause to be believed etc. v.; satisfy, persuade, have the ear of, gain the confidence of, assure; convince, convict^†, convert; wean, bring round; bring over, win over; indoctrinate etc. (teach) 537; cram down the throat; produce conviction, carry conviction; bring home to, drive home to.    go down, find credence, pass current; be received etc. v., be current etc. adj.; possess, take hold of, take possession of the mind.    ... show more

Dutch: verzekeren

Cause to feel sure; give reassurance to:
— The airline tried to reassure the customers that the planes were safe.

synonym: reassure.

Roget 858: hope, trust, confide, rely on, put one's trust in; lean upon; pin one's hope upon, pin one's faith upon etc. (believe) 484.    feel hope, entertain hope, harbor hope, indulge hope, cherish hope, feed hope, foster hope, nourish hope, encourage hope, cling to hope, live in hope, etc. n.; see land; feel assured, rest assured, feel confident, rest confident etc. adj.. presume; promise oneself; expect etc. (look forward to) 507.    hope for etc. (desire) 865; anticipate.    be hopeful etc. adj.; look on the bright side of, view on the sunny side, voir en couleur de rose [Fr.], make the best of it, hope for the best; put a good face upon, put a bold face upon, put the best face upon; keep one's spirits up; take heart, take heart of grace; be of good heart, be of good cheer; flatter oneself, lay the flattering unction to one's soul," catch at a straw, [Hamlet], hope against hope, reckon one's chickens before they are reckon one's chickens before they are hatched, count one's chickens before they are hatched.    [cause hope] give hope, inspire hope, raise hope, hold out hope etc. n.; promise, bid fair, augur well, be in a fair way, look up, flatter, tell a flattering tale; raise expectations (sentient subject); encourage, cheer, assure, reassure, buoy up, embolden.    ... show more

Make a promise or commitment.

synonym: promise.

Dutch: beloven, toezeggen