This article is from the Puzzles FAQ, by Chris Cole firstname.lastname@example.org and Matthew Daly email@example.com with numerous contributions by others.
What are the three common English words that end in -GRY?
There are only two: angry and hungry. The rec.puzzles archive offers a
large collection of words that end in -GRY, but none of them could be
considered even remotely common.
There are many generally unsatisfying "trick" answers to the problem,
which depend on a specific wording of the question or that the question be
spoken instead of written. There seems to be no agreement among puzzle
historians about which form is the original, or even the age of the
problem. In any event, it is apparent that the frequent mutations of the
puzzle statement over the years have erased whatever answer was intended
by the original author.