Terrible, hideous, foul.

Causing horror, terror, or extreme fear; horrible or terrible to behold or to hear; causing such… of visible objects, their qualities, etc.

= atel, adj.

Horrible; terrible.

Having an appearance or aspect which causes dread or horror; frightful or horrible, esp. through deformity or squalor. (Now merged in sense A. 3)

Frightful, dreadful, terrible, horrible; hence, horribly ugly or unpleasing, repulsive, revolting. In the original sense the notion was that of…

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

†In early use: Causing terror, terrible (obsolete). In modern use (cf. 2): Suggestive of the kind of horror evoked by the sight of death or…

Formidable, menacing; terrible in appearance. Obsolete.

= horrendous, adj.

Horrible, horrid, loathsome.

Horrible; grisly.

Calling forth expressions of horror; piteous, horrifying, shocking. Obsolete.

= ugly, adj. 1.

Causing horror, horrible.

Horrible, horrid; ugly.

Fearful, horrible, gruesome.

Inspiring fear, awe, or horror; such as to cause one to shudder with fear; fearful, horrible; grisly.

Horrible; grim; grisly.

Ghastly; horrible, frightful.

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

= ghastly, adj.

Ghastly; horrible, frightful.

Causing horror, horrifying.

Fitted to excite horror; terrible, dreadful, horrible.

Grisly, causing a shudder.