promissivus
From LSJ
νόησε δὲ δῖος Ὀδυσσεὺς σαίνοντάς τε κύνας, περί τε κτύπος ἦλθε ποδοῖιν → godly Odysseus heard the fawning of dogs, and on top of that came the beat of two feet
Latin > English (Lewis & Short)
prōmissīvus: a, um, adj. promitto,
I promising, promissive; in gram.; promissivum tempus, i. e. the future tense, Cons. p. 2061 P.: modus, Diom. p. 328 P.: sententiae, Isid. 2, 21, 18.—Adv.: prōmissīvē, by way of promise, with a promise (postclass.), Tert. adv. Marc. 4, 10.