Part of speech
Noun
Pitch accent
いみんぶそく
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Sentences
I've been lacking sleep for a while, so I'm not feeling well.
My lack of sleep caused a decrease in concentration.
Lately, I've been lacking sleep due to the busyness of work.
I have a headache because of lack of sleep.
I didn't have dinner, so I'm tired due to lack of sleep.
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