Ill-tempered; cantankerous.
ETYM Latin morosus, prop., excessively addicted to any particular way or habit, from mos, moris, manner, habit, way of life: cf. French morose.
1. Of a sour temper; sullen and austere; ill-humored; severe.
2. Brooding over evil thoughts.
Stingy, unpleasant, bad-tempered