Promised is a term that implies a commitment to do something. MEANT (5 letters) is to have an intention or purpose. CONTRACTED (10 letters) is to have made an agreement with someone. MATCHED (7 letters) is to have been equal to or similar to something. ENGAGED (7 letters) is to have pledged oneself to a particular course of action. OBLIGATED (9 letters) is to have been bound by a promise or duty. SWORE (5 letters) is to have made a solemn promise. VOWED (5 letters) is to have declared a solemn promise. ASSURED (7 letters) is to have declared something with confidence. All of these words are related to the term promised, and they all imply a commitment to do something.