Grewsome

There's a wheen German horse doun at Glasgow yonder; they ca' their commander Wittybody, or some sic name, though he's as grave and grewsome an auld Dutchman as e'er I saw.

Source: wiktionary

[T]hey packed him [a dead duck] and sealed him up in brown paper, and put him in the cupboard of an unoccupied study, where he was found in the holidays by the matron, a grewsome body.

Source: wiktionary

[T]he dim, mysterious half-light of the cellar falling in a grewsome way upon the misshapen bulk of a Chinese deity in the background, […]

Source: wiktionary

True, there were the usual night-sounds of the country—the whir of night-birds, the buzzing of insects, the barking of distant dogs, the mellow lowing of far-off kine—but these didn't seem to break the stillness, they only intensified it, and added a grewsome melancholy to it into the bargain.

Source: wiktionary