During the blackout, I had to grubble along the hallway until my hand found the light switch.

Each dawn, the tired hedgehog grubbles through the leaf litter in search of breakfast.

After hours of searching through the attic, he grubbled around until he found the old photo album.

While skimming the antique dictionary, I kept seeing grubbling listed as an archaic form and couldn't help wondering what it originally meant.