morose

Etymology

From French morose, from Latin mōrōsus (“particular, scrupulous, fastidious, self-willed, wayward, capricious, fretful, peevish”), from mōs (“way, custom, habit, self-will”). See moral.

adj

1. Sullen, gloomy; showing a brooding ill humour.
   If there is any boy or man who loves to be melancholy and morose, and who cannot enter with kindly sympathy into the regions of fun, let me seriously advise him to shut my book and put it away. It is not meant for him. 1857, R. M. Ballantyne, The Coral Island