| n. 1.  a.  A declaration assuring that one will or will not do something; a vow. b.  Something promised. 2.  Indication of something favorable to come; expectation: a promise of spring in the air. 3.  Indication of future excellence or success: a player of great promise. v.  prom·ised, prom·is·ing, prom·is·es  v.tr. 1.  To commit oneself by a promise to do or give; pledge: left but promised to return. 2.  To afford a basis for expecting: thunderclouds that promise rain. v.intr. 1.  To make a declaration assuring that something will or will not be done. 2.  To afford a basis for expectation: an enterprise that promises well. [Middle English promis, from Old French promise, from Medieval Latin prōmissa, alteration of Latin prōmissum, from neuter past participle of prōmittere, to send forth, promise : prō-, forth; see  PRO-1 + mittere, to send.] promis·er n. Synonyms:  promise, pledge, swear, vow1 These verbs mean to declare solemnly that one will follow a particular course of action: promises to write soon; pledged to uphold the law; swore to get revenge; vowed to fight to the finish. | 
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.











