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Meaning of delayed sleep phase disorder | Babel Free

Noun CEFR C2

Definitions

A circadian rhythm sleep disorder in which the subject falls asleep some hours after midnight and has difficulty waking up in the morning.

countable, uncountable

CEFR level

C2
Mastery
This word is part of the CEFR C2 vocabulary — mastery level.
See all C2 English words →

See also

delayed-onset muscle soreness Delayer Delayers Delaying delaying tactic delayism

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