Chinese words with 丝 character meaning (HSK)

丝绸

SI1, CHOU2
silk cloth, silk
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丝毫

SI1, HAO2
the slightest amount or degree, a bit
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一丝不苟

YI4, SI1, BU4, GOU3
not one thread loose (idiom), strictly according to the rules, meticulous, not one hair out of place
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