Another word for promise
assurance, agreement, pact, oath, engagement, covenant, consent, avowal, warrant, asseveration, affirmation, swearing, plight, word, troth, vow, profession, guarantee, insurance, obligation, stipulation, commitment, betrothal, affiance, espousal, plighted faith, marriage contract, giving one's word, gentleman's agreement, attestation, word of honor, parole, warranty, foretaste.
To give one's word
plight, engage, declare, agree, vow, swear, espouse, consent, asseverate, affirm, profess, undertake, pledge, covenant, contract, bargain, affiance, betroth, assure, guarantee, warrant, give assurance, give warranty, insure, cross one's heart, keep a promise, live up to, plight one's faith, plight one's troth, bind oneself, commit oneself, obligate oneself, make oneself answerable, secure, give security, underwrite, subscribe, lead one to expect, answer for, pledge one's honor, cross one's heart and hope to die*.
To appear promising
Another word for promisenoun
A declaration that one will or will not do a certain thing:assurance, covenant, engagement, guarantee, guaranty, pledge, plight2, solemn word, vow, warrant, word, word of honor. See obligation