Akademik

first water
noun
the highest quality gems
• Hypernyms: ↑superiority, ↑high quality

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noun
1. : the highest quality or purest luster — used of gems (as diamonds and pearls)
2. : the highest grade or excellence : the highest degree : the first quality

this is choral music of the first water — P.H.Lang

a fool of the first water — Thomas Wolfe

an alarmist of the first water — Katherine Mansfield

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1. (formerly) the highest degree of fineness in a diamond or other precious stone. Cf. water (def. 13).
2. the finest quality; highest rank.
[1745-55]

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first water noun
The first or highest quality, or purest lustre, of diamonds and pearls (also figurative)
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Main Entry: ↑first

Useful english dictionary. 2012.