The Collaborative International Dictionary
Viripotent
Viripotent \Vi*rip"o*tent\, a. [L. vir man + potens fit for.] Developed in manhood; hence, able to beget; marriageable.
Being not of ripe years, not viripotent.
--Holinshed.
Wiktionary
viripotent
a. (context obsolete English) Developed in manhood; able to beget children.