“Fast asleep” in Japanese
Short answer
Fast asleep in Japanese is “昏々” (konkon). Full meaning: fast asleep, dead to the world.
Other ways to say “Fast asleep” in Japanese
ガン寝
ganne fast asleep, bombed, crashed
爆睡
bakusui sleeping like a log, (being) fast asleep (bombed, crashed)
寝汚い
igitanai sound asleep, fast asleep; untidy, slovenly
昏昏
konkon fast asleep, dead to the world
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