Decypher meaning

Alternative spelling of decipher.
verb
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Alternative spelling of decipher.
noun
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Origin of decypher

As decipher, but retaining the y from the Old French etyma of cipher (cyfre, cyffre); the i spelling tends to be preferred etymologically, being consistent with its cognates, the French déchiffrer and the Italian decifrare, and with their common ancestor, the Medieval Latin cifra, cifera, ciphra.