impregn
To impregnate; to make fruitful.
archaic
With Reason
his perswasive words, impregn’d
Where it comes from
First attested in the early 15ᵗʰ century, in Middle English; from Middle English impregnen (“to make a woman pregnant, impregnate”), from Old French enpreignier, enpreigner (French imprégner), ultimately from Medieval Latin impraegnō. Doublet of impregnate.
Adapted from the Wiktionary entry impregn (CC BY-SA 4.0).