English

greenen

From green + -en.

Formed from green + -en

Proto-Indo-European *gʰreh₁- ‘to grow’

…

Proto-Germanic *grōniz

Proto-West Germanic *grōnī

Old English grēne

Middle English grene

English green

Today it means

verb To make or become green.

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