I-adjective (keiyoushi)
dark; gloomy; murky
あたりがもう暗くなっていることに気がついた。I observed that it had already got dark. depressed; dispirited; down in the dumps; dark (mood)
dark (in colour); dull
ill-boding; dark (e.g. past); suspicious
unlikely (to succeed); hopeless; unpromising
unfamiliar (with); ignorant (of)
as 〜に暗い
Also written 昏い【くらい】、冥い【くらい】、闇い【くらい】