Synonyms for Tiredness
Updated · Synonyms List editorial team

Quick answer: Tiredness describes a state of physical or mental exhaustion caused by effort or lack of rest. Many words capture this feeling, ranging from common terms like weary to formal options like fatigued. Choosing the right synonym depends on whether you describe bodily weakness or mental burnout in your sentence.
Closest Synonyms for Tiredness
- sapped
- Used when tiredness removes strength gradually or suddenly; The heat sapped his energy during the afternoon.
- fatigue
- a deep physical exhaustion that makes movement feel heavy
- weariness
- a state of being overworked that pulls at the soul
- lassitude
- a lack of energy or enthusiasm that makes starting tasks hard
- exhaustion
- a total depletion of strength after intense effort
- sluggishness
- a slow and heavy feeling that makes thinking feel thick
- debility
- a loss of physical power that limits what one can do
- prostration
- a feeling so weak one cannot stand without support
- drudgery
- tiredness caused by boring and repetitive hard work
- spoil
- a worn down state that ruins a days plans quickly
- worn-out
- a condition where nothing feels new or fresh anymore
- spent
- having used up all resources so no more energy remains
- knackered
- a very tired state often said by British speakers
- bone-tired
- exhaustion that seems to be deep inside the bones
- flagged
- losing the power to keep moving forward or awake
Formal Synonyms for Tiredness
- apathy
- Can imply tiredness as a loss of interest or enthusiasm, though it often leans toward emotional indifference.
- torpor
- Describes a state of tiredness where bodily functions or mental activity are slowed or dulled.
- inertia
- Metaphorically used for tiredness, suggesting an inability to get started due to heaviness.
- burnout
- A modern formal term for extreme tiredness caused by prolonged stress or overwork.
- flagging
- Describes tiredness as a gradual decline in energy or vigor over time.
- drain
- Refers to tiredness as the result of having too much taken away from one's resources.
- fatique
- A less common variant of fatigue, sometimes used in specific contexts to denote tiredness.
Informal Synonyms for Tiredness
- dead-beat
- feeling so sleepy that you cannot get up or move.
- spun-out
- mentally exhausted and unable to focus clearly.
- zapped
- having your energy drained away suddenly or quickly.
- beat-up
- feeling tired and sore after physical activity.
- sluggish
- moving slowly because you lack energy and alertness.
- dragged
- feeling as though your body is too heavy to lift.
- fagged
- becoming tired and weak after prolonged effort.
- drained
- losing your vitality and feeling empty inside.
Stronger and Weaker Words
- drowsiness
- weaker, for a tendency to fall asleep
- weary
- neutral to stronger, often implies mental burden
- listlessness
- weaker, for lack of interest or energy
Antonyms for Tiredness
- energetic
- vigorous
- fresh
- alert
- lively
- spirited
- animated
- refreshed
- revitalized
- upbeat
- bouncy
- zesty





