Synonyms for Ghastly:

adj.

all (adjective)
macabre, grisly, gruesome, grim.
awful (adjective)
repulsive, frightful, dreadful, horrible, hideous, dire, alarming, unpleasant, horrid, terrible, appalling, awful.
deathly (adjective)
deathlike.
ghostly (adjective)
deadly, ghostly, scary, cadaverous.
gray (adjective)
ashen.
grisly (adjective)
grisly.
offensive (adjective)
horrid, offensive, frightful.

n.

unnatural, weird, sickening, cadaverous, spectral, ashen, detestable, despicable, uncanny, unearthly, deathlike, natural, ghostly, vile, supernatural, real, revolting. fearful, fear, tremendous, direful, scary, fearsome, redoubtable, formidable. live, deathly, ghostlike, deadly. ghastly (noun)
grim, charnel, sepulchral, alarming, offensive, grisly, macabre, gruesome.
terrifying (noun)
frightening.
unpleasant (noun)
abhorrent, disgusting.

Other synonyms:

eerie, menacing, deathlike, fearsome, scary, awesome, ghostlike, chilling, direful, spooky. redoubtable, horrendous, lurid, fearful. ghostly, shocking. tremendous, deadly, formidable. deathlike
deathly.
ghoulish
unearthly.
mysterious
weird.
phantom
spectral.

Usage examples for ghastly

  1. The first meeting was a ghastly affair. – The Sunny Side of Diplomatic Life, 1875-1912 by Lillie DeHegermann-Lindencrone
  2. Suddenly he swept his hand low to the ground and a ghastly sort of smile crossed over his face. – The Weavers, Complete by Gilbert Parker Last Updated: March 14, 2009
  3. The next moment Laura came out, her face almost ghastly under the tan, and she put her hand on Caroline's arm. – The Privet Hedge by J. E. Buckrose