underslept
Needing more rest
Underslept describes having gotten too little sleep: I'm underslept and can barely function.
The word works like underpaid or underfed—indicating a deficit.
Someone chronically underslept accumulates fatigue over time.
The past tense of undersleep appears more often than the base verb.
Nearly falling asleep
- groggyWeak and unsteady
- bleary-eyedTired and unfocused
- heavy-liddedWith lowered eyelids
- yawningOpening mouth when tired
nodding · dozing · snoozy · somnolent · half-asleep · foggy · dazed · unfocused
Utterly depleted of energy
- drainedEmptied of resources
- fatiguedDrained of energy
- sappedDepleted of vitality
- spentExhausted or disbursed
worn-out · depleted · enervated · debilitated · knackered · frazzled · wiped · flagging
Lacking energy or alertness
- sluggishSlow and inactive
- listlessLacking energy or enthusiasm
- languidWeak and without vigor
- torpidInactive and slow
slow · unenergetic · leaden · plodding · dragging · unmotivated · apathetic · inert
Ill-tempered and peevish
- irritableEasily provoked to annoyance
- grumpyIrritable in temperament
- short-temperedProne to sudden anger
- snappyQuick and clever
moody · edgy · testy · grouchy · crabby · peevish · touchy · impatient
Unable to be still
Obscured by vapor
- unfocusedWithout clear direction
- distractedUnable to concentrate
- scatterbrainedLacking mental focus
- inattentiveNot paying attention
forgetful · muddled · disoriented · spacey · absent-minded · hazy · confused · clouded
drowsy
Nearly falling asleep
- groggyWeak and unsteady
- bleary-eyedTired and unfocused
- heavy-liddedWith lowered eyelids
yawning · nodding · dozing · snoozy · somnolent · half-asleep · foggy · dazed · unfocused · blinking
exhausted
Utterly depleted of energy
spent · worn-out · depleted · enervated · debilitated · knackered · frazzled · wiped · flagging · overtired
lethargic
Lacking energy or alertness
torpid · slow · unenergetic · leaden · plodding · dragging · unmotivated · apathetic · inert · heavy
cranky
Ill-tempered and peevish
- irritableEasily provoked to annoyance
- grumpyIrritable in temperament
- short-temperedProne to sudden anger
snappy · moody · edgy · testy · grouchy · crabby · peevish · touchy · impatient · fractious
restless
Unable to be still
foggy
Obscured by vapor
- unfocusedWithout clear direction
- distractedUnable to concentrate
- scatterbrainedLacking mental focus
inattentive · forgetful · muddled · disoriented · spacey · absent-minded · hazy · confused · clouded · fuzzy-headed
undersleptwell-rested
Having slept enough
rested · refreshed · overslept · rejuvenated · restored