😴 Too little sleep 😴 To sleep too little

undersleep

7.5

A lack of sleep that is less than needed for good health

noun
/ˈʌndərˌsliːp/

: insuficiencia de sueño

Doctors warn that undersleep may weaken the immune system over time.

Examples

Many students struggle with undersleep during exam periods due to late-night studying.
After a night of undersleep, I feel exhausted.
Prolonged undersleep can negatively affect your mood and memory.
I often experience undersleep during the week.
Prolonged undersleep can negatively affect your mood and memory.
Many students struggle with undersleep during exam periods due to late-night studying.
After a night of undersleep, I feel exhausted.

Synonyms

sleeplessness

vsundersleep

7 4.1

Not being able to sleep for a period of time

emphasizes not enough sleep amount rather than inability to sleep

sleep dep

vsundersleep

Informal

9.7

A state of not having enough sleep that makes you very tired

is the neutral term for that unhealthy lack of sleep

Antonyms

to oversleep

29 2.0

Sleep longer than you meant to and wake up late

How Much Sleep

restful

17 1.8

undersleep

7.5

sleep deprivation

Offensive

12 5.3

Surface Forms

undersleep singular

undersleeps plural

Morphology

undersleep = sleep (transparent) = under + sleep

The prefix 'under-' clearly indicates a deficiency, and the combination with 'sleep' transparently conveys the meaning of insufficient sleep.

Etymology

Undersleep comes from the parts under- meaning 'not enough' and sleep, so it literally means 'not enough sleep'. That's why an undersleep is an amount of sleep that is too small and can make you feel tired or weak.