Synonyms for frightful

Adjective

1. atrocious, frightful, horrifying, horrible, ugly, alarming (vs. unalarming)

usage: provoking horror; "an atrocious automobile accident"; "a frightful crime of decapitation"; "an alarming, even horrifying, picture"; "war is beyond all words horrible"- Winston Churchill; "an ugly wound"

2. frightful, extraordinary (vs. ordinary)

usage: extreme in degree; "in a frightful hurry"; "spent a frightful amount of money"

3. fearful, frightful, terrible, bad (vs. good)

usage: extremely distressing; "fearful slum conditions"; "a frightful mistake"; "suffered terrible thirst"