ETYM Cf. French dur, Latin durus hard.
Harshly uninviting or formidable in manner or appearance; SYN. forbidding, grim.
dark · dogged · forbidding · glowering · glum · grim · ill-natured · moody · morose · obstinate · pertinacious · saturnine · sour · stubborn · sullen · tenacious · unpleasant · unregenerate · unyielding