decipher

Definition

To convert a code or cipher to plain text.

Etymology

As decypher, but not 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. By surface analysis, de- + cipher.

Example Sentences

• "Truly, we need human infirmity to teach us human nature, and that to Louis had been as a sealed book; he had only seen the coloured and gilded outside: too late he had to decipher the rough and gloomy page within."