dreadful
1. [ adjective ] causing fear or dread or terror
Synonyms: terrible frightening awful fearful horrendous dreaded dread fearsome horrific direful dire
Examples:

"the awful war" "an awful risk" "dire news" "a career or vengeance so direful that London was shocked" "the dread presence of the headmaster" "a dreaded disease" "a dreadful storm" "a fearful howling"

Related terms: alarming
2. [ adjective ] exceptionally bad or displeasing
Synonyms: awful unspeakable terrible painful abominable atrocious
Examples:

"atrocious taste" "abominable workmanship" "an awful voice" "dreadful manners" "a painful performance" "terrible handwriting" "an unspeakable odor came sweeping into the room"

Related terms: bad
3. [ adjective ] very unpleasant
Related terms: unpleasant
Similar spelling:   dreadfully
  dried_fruit
  dried-up