1. atrocious, frightful, horrible, horrifying, ugly

provoking horror

Example Sentences:
'an atrocious automobile accident'
'a frightful crime of decapitation'
'an alarming, even horrifying, picture'
'war is beyond all words horrible'
'an ugly wound'

Synonyms

• atrocious
• horrible
• horrifying
• ugly

2. awful, frightful, terrible, tremendous

extreme in degree or extent or amount or impact

Example Sentences:
'in a frightful hurry'
'spent a frightful amount of money'

Synonyms

• awful
• terrible
• tremendous

3. fearful, frightful

extremely distressing

Example Sentences:
'fearful slum conditions'
'a frightful mistake'

Synonyms

• fearful