That inspires or instils fear, terror, or dread; terrible, dreadful; (from the 18th century often) extremely shocking or distressing; horrific.

Awful, terrible.

Causing fear; inspiring terror, reverence, or awe; dreadful, terrible, awful.

objectively. Inspiring fear; awsome, dreadful; = fearful, adj. 1.

Awe-inspiring; horrible; grisly.

Held in awe; awful; revered.

That is regarded with dread or great fear; inspiring deep awe or apprehension.

Fitted to cause trembling or fear. Demanding reverential fear.

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

Arousing or inspiring awe; that fills someone with reverential fear, wonder, or respect.

= tremendous, adj.

That fills someone with awe; awe-inspiring.

Such as to excite trembling, or awe; awful; ‘dreadful; horrible; astonishingly terrible’ (Johnson).

Held in awe or reverence; feared, dreaded, revered. Cf. awe, v. 4. Obsolete.

Awe-inspiring.