lightness

Meanings

1. 1
   noun

   the quality of having little weight, or of being bright or carefree

   There was a sudden lightness in her step.

From Middle English lightnesse, from Old English lēohtnes, from lēoht ('light, not heavy; bright') + -nes ('-ness'). The senses of low weight, brightness, and carefree gaiety all descend from the polysemy of 'light'.

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