-ont-

Etymology
The o vowel of future-tense -os plus the nt of the Latin/Romance active present participle.

Suffix

 * 1)  -onto One who will do the action of the root
 * Example: ami (to love), amonto (one who is to love)
 * 1)  -onta The active future participle
 * Example: ami (to love), amonta (about to love)
 * 1)  -onte The active future adverbial participle
 * Example: ami (to love), amonte (being about to love)