YOU SAID:

Well isn't that a feather in his cap?

INTO JAPANESE

まあ、それは彼の帽子の羽ではありませんか？

BACK INTO ENGLISH

Well, isn't it the wings of his hat?

INTO JAPANESE

まあ、それは彼の帽子の翼ではありませんか？

BACK INTO ENGLISH

Well, isn't it his wings hat?

INTO JAPANESE

まあ、それは彼の翼の帽子ではありませんか？

BACK INTO ENGLISH

Well, isn't it his winged hat?

INTO JAPANESE

まあ、それは彼の翼のある帽子ではありませんか？

BACK INTO ENGLISH

Well, isn't it his winged hat?