Onyomi Examples
妾 (ショウ) mistress, kept woman, concubine, I, me
妾出 (ショウシュツ) illegitimate (e.g. born to a mistress)
愛妾 (アイショウ) beloved concubine, favourite concubine (e.g. of the shogun)
外妾 (ガイショウ) foreigner's mistress
Kunyomi Examples
妾 (めかけ) mistress, kept woman, concubine
妾腹 (しょうふく) illegitimate (e.g. born to a mistress)