What word is a plural, but when you add an "S" to the end, it becomes singular?

What word is a plural, but when you add an "S" to the end, it becomes singular?

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It is sometimes known to have silver linings.

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Come up and let us go. Go down and here we stay.

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What gets wetter as it dries?

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Lives without a body, hears without ears, speaks without a mouth, to which the air alone gives birth. What is it?

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A caribbean shape that makes ships disappear

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Riddle of the Day

Mar 17, 2026

If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?

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