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Mind & EmotionGreekEnglish

Lethargy

/ˈlɛθərdʒi/noun

A heavy sluggishness in which nothing feels worth the effort.

The Greek roots

λήθη
lḗthē
forgetfulness
+
ἀργός
argós
idle, not working

Literally: forgetful idleness

The story of the word

Greek physicians used λήθαργος for a specific feverish stupor in which the patient drifts off and forgets. Lethe is the river the dead drink from in order to forget, and ἀλήθεια, truth, is literally the not-forgotten. The second half, ἀργός, is a squeezed form of ἀ-εργός, not working, and William Ramsay used it in 1894 to name argon, the gas that refuses to react.

How it travelled
Ancient Greek → Late Latin → Old French → English
First recorded
14th century

The same roots elsewhere

Other languages reached for exactly the same Greek pieces.

Same family

Letheargonenergyalethic

In a sentence

A week of grey weather and the whole office slid into lethargy.

Built on the same root

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