promissive

Making or implying a promise; promising.

I answer, that the word may be considered under a double notion, either as it is operative of faith, or as it is promissive of rest to believers: take it as operative of faith, and so it profits, not being mixed with faith, otherwise faith could not come by hearing, as the apostle asserts, (Rom. x. 17); but take it as promissive of rest to believers, and so it doth not profit, not being mixed with faith; that is, faith, which is the condition of the promise, not being performed, the eternal rest, which is the thing promised, cannot belong to them: and this is clearly the apostle's meaning;

The performing of the promises cancelled the promissive words; for if they were yet promissive, then what was promised is not performed; this was promised by certain signs. Those promissive signs are cancelled, because the promissive Verity is exhibited.

Implying that the speaker intends to do something or guarantees something.

Changing the expression—shall is predictive, and will is promissive in the first person only; whereas, in the second and third, will is predictive, and shall promissive.

As we will see, Korean also has promissive and propositive speech act sentence particles, which encode commitment and suggestion, respectively, and exclamative/mirative, indicating a surprise.

A promissive mood, phrase, word, or inflection.

The promissive presumably belongs with informant subjects because we can assert a special kind of commitment concerning our own future actions; or, in a question, ask for this commitment from the addressee.

The answer to the first question is negative: yídìng cannot express strong epistemic necessity in an imprative or a promissive.