fatigue

/fəˈtiːɡ/noun

Deep tiredness brought on by hard physical or mental effort.

Example sentences

“After the double shift, the nurse could barely hide her fatigue.”
“Long drives without breaks can lead to dangerous driver fatigue.”

More clinical than 'tiredness': doctors and engineers both use it, as in chronic fatigue or metal fatigue. 'Fatigues' in the plural means military work clothes.

health

Synonyms for fatigue

exhaustion
tiredness
weariness
lethargy

Antonyms

energy
vigor

Related words

checkupA regular visit to a doctor or dentist to make sure everything is healthy.painfulMaking you feel pain, whether in the body or in the mind.remedyA medicine or treatment that eases or cures an illness.healTo cure an illness or injury, or to make a wound get better.contagiousSpreading easily from one person to another.swollenLarger than normal because of injury, illness, or a buildup of fluid.