noun

lassitude

LASS-ih-tood/ˈlæsɪtuːd/

A state of tiredness and lack of energy.

The summer heat brings a lassitude that makes work difficult.

An exhausted adult slumps wearily in an armchair after work, depleted energy and heavy limbs, no text.
Etymology

The pieces express the condition of being weary. Lassitude names weakened energy or languor, applying this tired condition to the mind as well as the body.

In context

Conquering Your Fibromyalgia6:52
They complained of languor, lassitude, want of buoyancy, aching of the limbs, and mental depression.
Neurasthenia to Fibromyalgia: The Condition Medicine Forgot Part 1

More examples

  • A lingering lassitude kept her on the couch after the flu.
  • He shook off his morning lassitude with a brisk walk.
  • By midafternoon, lassitude settles over the office.

Similar words

fatigue
Emphasizes physical or mental tiredness, often following exertion.
lethargy
Emphasizes sluggishness and reduced alertness, rather than tiredness alone.
listlessness
Emphasizes lacking interest or enthusiasm along with low energy.