noun
1. Southern U.S. ill temper; grumpiness.
Quotes
Ma has a case of the mulligrubs here lately and some of the kinfolks figure it might be caused by reading the papers too much.
– Bob Kyle, "Fiddlin' Around," The Tuscaloosa News June 1, 1983
I think when it comes I will enjoy it. It is just the coming that fills me with the mulligrubs.
– Winston Graham, The Twisted Sword, 1990
Origin
The extravagant spelling variants of mulligrubs, e.g., mulligrums, mouldy-grubs, merlygrubs, muddigrubs, mullygrumps, murdiegrups,… at least show very plainly that mulligrubs has no sound etymology. Mulligrums “low spirits, bad temper, bad mood” first appears at the end of the 16th century. (Some scholars suggest a relationship between mulligrums and the slightly earlier noun megrims “melancholy, low spirits.”) A quarter of a century later, about 1625, mulligrubs meant “stomachache, diarrhea” and a few years later “ill-tempered or surly person.”