Exciting or fitted to excite horror; tending to make one shudder; extremely repulsive to the senses or feelings; dreadful, hideous, shocking…

Causing horror or aversion; revolting to sight, hearing, or contemplation; terrible, dreadful, frightful; abominable, detestable.

That one shrinks from naming; inexpressibly loathsome; abominable.

In stronger sense: Revolting to the feelings; exciting intense horror or repugnance.

That gives offence; offensive. Also, causing unpleasant surprise. Now rare or Obsolete.