PROMISSORY
promissory
(adjective) relating to or having the character of a promise; “promissory note”
Source: WordNet® 3.1
Adjective
promissory (not comparable)
Containing or consisting of a promise.
(legal, of a contractual provision) Stipulating the future actions required of the parties to an insurance policy or other business agreement.
Source: Wiktionary
Prom"is*so*ry, a.
Definition: Containing a promise or binding declaration of something to be
done or forborne. Promissory note (Law), a written promise to pay to
some person named, and at a time specified therein, or on demand, or
at sight, a certain sum of money, absolutely and at all events; --
frequently called a note of hand. Kent. Byles. Story.
Source: Webster’s Unabridged Dictionary 1913 Edition