A morose Barack Obama, believing his presidency has no meaning, wanders the White House.
He peppers everyday discussion with arcane and morose tidbits of deathophelia.
Lee McQueen could see beauty in the morose and even the morbid.
1530s "gloomy," from Latin morosus "morose, peevish, hypercritical, fastidious," from mos (genitive moris) "habit, custom" (see moral (adj.)). In English, manners by itself means "(good) manners," but here the implication in Latin is "(bad) manners." Related: Morosity.