gruesome
adjective /ˈɡruːsəm/
  /ˈɡruːsəm/
- very unpleasant and filling you with horror, usually because it is connected with death or injury
- a gruesome murder
 - gruesome pictures of dead bodies
 - (humorous) We spent a week in a gruesome apartment in Miami.
 
Oxford Collocations Dictionaryverbs- be
 
- particularly
 - extremely
 - fairly
 - …
 
Word Originlate 16th cent.: from Scots grue ‘to feel horror, shudder’ (of Scandinavian origin) + -some. Rare before the late 18th cent., the word was popularized by Sir Walter Scott.