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Asthenia

/æsˈθiːniə/noun

Abnormal physical weakness or loss of strength.

The Greek roots

ἀ-
a-
not, without
+
σθένος
sthénos
strength, might

Literally: without strength

The story of the word

σθένος is Homer's word for the raw strength of a fighter or a bull. Medicine turned its negative into a diagnosis: John Brown's system in the 1780s divided every illness in the world into sthenic and asthenic, over-excited or under-excited, and treated the second with brandy and opium. The system collapsed, the word did not. Calisthenics keeps the positive form, joined to κάλλος, beauty: strength that looks good.

How it travelled
Ancient Greek → Modern Latin → English
First recorded
18th century

Same family

neurastheniamyastheniacalisthenics

In a sentence

Weeks after the fever she still had the asthenia, unable to climb a flight of stairs.

Built on the same root

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