(adj.) having a
strong desire or need to unload the bowels; often accompanied by abdominal discomfort and an overall sense of uneasiness
The word is essentially a synonym for expressing an urge to *take a dump/shit/
crap* - only in a more pleasant, concise manner.
Crystal: Dude, why are you walking like you got
something stuck up your ass? Are you OK?
William: Sorry, babe, I'm
just dumpy... Is there a
bathroom anywhere along this hiking trail?