decipher
英検準1級解読する・読み解く
意味
- 〈分かりにくい文字など〉を判読する
- 〈暗号〉を解読する
語源
英語の原文（Wiktionary）
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.