frightful
1. [ adjective ] provoking horror
Synonyms: horrible horrifying ugly atrocious
Examples:

"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"

Related terms: alarming
2. [ adjective ] (informal) extreme in degree
Examples:

"in a frightful hurry" "spent a frightful amount of money"

Related terms: colloquialism extraordinary
3. [ adjective ] extremely distressing
Synonyms: terrible fearful
Examples:

"fearful slum conditions" "a frightful mistake" "suffered terrible thirst"

Related terms: bad
Similar spelling:   frightfully
  fright
  freight
  fraught
  frighten
  freighter
  frighten_off
  frightened
  freightage
  frightening
  frigate
  freight_car
  Fregata