dreadful

 
Pronunciation: /ˈdrɛdfʊl, -f(ə)l/

adjective

  • 1causing or involving great suffering, fear, or unhappiness; extremely bad or serious: there’s been a dreadful accident
  • extremely disagreeable: the weather was dreadful
  • (of a person) unwell or troubled: I feel dreadful—I hate myself she looked quite dreadful and she was struggling for breath
  • 2 [attributive] used to emphasize the degree to which something is the case, especially something regarded with sadness or disapproval: this was all a dreadful mistake you’re a dreadful flirt

Derivatives

dreadfulness

noun