grubber

As a noun grubber is

one who grubs.

As nouns the difference between grabber and grubber

is that grabber is one who, or that which, grabs seizes while grubber is one who grubs.

As nouns the difference between rubber and grubber

is that rubber is (uncountable) pliable material derived from the sap of the rubber tree; a hydrocarbon polymer of isoprene or rubber can be (sports) a series of an odd number of games or matches of which a majority must be won (thus precluding a tie), especially a match consisting of the best of a series of three games in bridge or whist while grubber is one who grubs.

As a verb rubber

is to eavesdrop on a telephone call.

As a noun grubber

is one who grubs.

As an adjective grubbier is

comparative of grubby.

As a verb grubbed

is (grub).

As a noun grubber is

one who grubs.

As nouns the difference between grubber and drubber

is that grubber is one who grubs while drubber is a person who gives someone a drubbing.