Showing results for chronic fatigue syndrome. Search instead for chronic fatigue.

Definitions

chronic fatigue syndrome

NOUN

disorder involving extreme fatigue and weakness

Synonyms

WEAK

chronic fatigue and immune dysfunction syndrome fatigue disease fatigue syndrome myalgic encephalomyelitis post-viral fatigue syndrome postviral syndrome yuppie flu

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

ME, sometimes referred to as chronic fatigue syndrome, is a chronic and complex multi-system condition.

From BBC • Mar. 22, 2026

Almost half of the chronic fatigue participants breathed irregularly during the tests, compared to only four people in the control group.

From Science Daily • Nov. 10, 2025

However, 71% of the chronic fatigue group showed breathing abnormalities, such as hyperventilation, dysfunctional breathing, or both.

From Science Daily • Nov. 10, 2025

Katie Livings has chronic fatigue syndrome which causes exhaustion, headaches and sensitivity to light.

From BBC • Nov. 5, 2025

“You know, Ed,” Ritchie says after a while, “I used to think I had that chronic fatigue syndrome. ...”

From "I Am the Messenger" by Markus Zusak