Definition of grimdark in English:

grimdark

noun

mass noun
  • A genre of fiction, especially fantasy fiction, characterized by disturbing, violent, or bleak subject matter and a dystopian setting.

    ‘I was super into grimdark when I was in college’

adjective

  • (of fiction, especially fantasy fiction) characterized by disturbing, violent, or bleak subject matter and a dystopian setting.

    ‘there were two series that were too grimdark for me’

Origin

Early 21st century: from grim and dark (or darkness).

Pronunciation

grimdark

/ˈɡrɪmdɑːk/