Search gender: all male female Sonin Girl Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: sonin Katakana: ソニン 0 Kanji: 素任 Meaning: 素Element. A predisposition. As you were born. Usual. Undyed silk. White silk. A word used in the name of an element. 任To leave to others. A role or matter to be fulfilled. Guarantee. To assign to an official position. To give a role to. To let do as one pleases. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Sonin Girl Name Meaning, Kanji Variations.