thinness

US /ˈθɪn.nəs/
UK /ˈθɪn.nəs/
1.

sự mỏng manh

the quality of having little flesh on the bones:

:
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The author discusses why female beauty has become linked to thinness.
:
thinbe as thin as a rakebe thin on topinto thin airthin on the groundthrough thick and thinout of thin air