真まっ暗くら闇やみ

noun, noun which may take the genitive case particle 'no', na-adjective

complete darkness; total darkness; pitch darkness

Emphatic word for absolute darkness, stronger than 暗闇 alone. Often used in descriptions of places or situations with no light at all.

• 地ち下か室しつは真まっ暗くら闇やみで何なにも見みえなかった。

  The basement was pitch dark and I couldn't see anything.

• 真まっ暗