English

grubble

From grub + -le, frequentative, but compare grabble.

Formed from grub + -le

Proto-Indo-European *gʰrebʰ-

Proto-Germanic *grubb-

Proto-West Germanic *grubb-

Old English *grubbian

Middle English grubben

English grub

Today it means

verb To feel or grope in the dark.

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