1. An adjective taken from the root words of grim and darkness, both of which are featured in the tagline for Warhammer 40,000: "In the grim darkness of the far future there is only war." It is usually used to describe a setting that would equal poor living conditions and life expectancies for those actually living in it.
"Man at 4chan they have this totally grimdark picture of Inspector Gadget."
by kbeir October 07, 2008
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