Skip to content
Everyday LifeGreekEnglish

Tonic

/ˈtɒnɪk/noun

Something that restores strength or vigour, and in music the home note of a key.

The Greek roots

τόνος
tónos
a stretching, tension, pitch
+
τείνειν
teínein
to stretch

Literally: of stretching

The story of the word

Underneath all of it is a rope pulled tight. Muscle tone, a tone of voice, the tonic key and a tonic for the nerves all descend from that single image of tension. Tonic water is named for the quinine dissolved in it, sold in British India as a malaria remedy before anyone thought to add gin.

How it travelled
Ancient Greek → New Latin → English
First recorded
1640s

Same family

tonemonotonebaritoneisotonic

In a sentence

Two weeks by the sea worked as a tonic on all of them.

Built on the same root

More from Everyday Life