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"thin" is also used as a crossword clue. If that's what you saw, the answer is often watery (6 letters).
Definitions
Not thick, narrow, slight, or having little substance.
Word origin
From Middle English thinne, thünne, thenne, from Old English þynne, from Proto-West Germanic *þunnī, from Proto-Germanic *þunnuz (“thin”) – compare *þanjaną (“to stretch, spread out”) – from Proto-Indo-European *ténh₂us (“thin”), from *ten- (“to stretch”).
Used in a sentence
“thin plate of metal; thin paper; thin board; thin covering”
“Out of spite, the human beings pretended not to believe that it was Snowball who had destroyed the windmill: they said that it had fallen down because the walls were too thin.”
“thin wire; thin string”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer2 curated clues
01“Slim or narrow”4 letters
02“Not thick”4 letters
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