suffix forming adjs. (= mod.F. -atile), ad. L. -ātilis, consisting of the suffix -ilis (see -ILE) ‘denoting possibility and quality,’ appended to ppl. stems in -āt- of verbs in -āre, as in volātus flying, volātilis used to fly, Eng. volatile: also with sbs. as aquātilis, Eng. aquatile, fluviatile, umbratile, all of modern introduction, and nearly synonymous with those in -ATIC.