To promise is to give your word about something or guarantee that you will do whatever you are saying you will do.(verb)
An example of promise is when you say to your friend "I swear I will be there."
The definition of a promise is a statement given by someone that he will do as he said, or it can refer to a person's potential.(noun)
See promise in Webster's New World College Dictionary
Origin: ME promis < L promissum < promittere, to send before or forward < pro-, forth + mittere, to send: see pro- & mission
See promise in American Heritage Dictionary 4
Origin: Middle English promis
Origin: , from Old French promise
Origin: , from Medieval Latin prōmissa
Origin: , alteration of Latin prōmissum
Origin: , from neuter past participle of prōmittere, to send forth, promise
Origin: : prō-, forth; see pro-1
Origin: + mittere, to send.
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