Stern, harsh and forbidding; expressing gloom or melancholy.
Bertie: There was a strange atmosphere at dinner last night Jeeves, perhaps best described as dour.
Jeeves: I was never under the impression that Totleigh Towers had a reputation for prandial jocundity, sir.
Bertie: True, Jeeves. True. But the atmosphere was even less than usually jocund.
– Jeeves and Wooster (1991) Season 2, Episode 2; “A Plan for Gussie” [No. 7]