English

infecund

From in- + fecund.

Formed from in- + fecund

Proto-Indo-European *h₁én ‘in’

Proto-Germanic *in ‘into’

English in-

Proto-Indo-European *dʰeh₁(y)- ‘to suckle, nurse’

Latin fēcundus ‘fertile’

Middle French fécond

Today it means

adj infertile

Language periods are conventional ranges, not dates for this word.

Etymograph / infecund