Meaning : Provoking horror.
Example :
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
Meaning : Extreme in degree or extent or amount or impact.
Example :
In a frightful hurry.
Spent a frightful amount of money.
Synonyms : awful, terrible, tremendous
Meaning : Extremely distressing.
Example :
Fearful slum conditions.
A frightful mistake.
Synonyms : fearful