mulligrubs (MUL-i-grubz) noun
1. Grumpiness; colic; low spirits.
2. An ill-tempered person.
[From mulliegrums, apparently from megrims (low spirits).]
“I got the dismals. Not exactly the dumps or mulligrubs, more like moody and uncertain, as when you don’t know what’s going to happen next.”
Fred Schmidt; Middle East Thing Puts Chill on Festivities; San Antonio Express-News (Texas); Dec 30, 1990