Search gender: all male female マナギ Japanese Girl Names Variations. 1 names found. gender: all male female Name: managi Katakana: マナギ 0 Kanji: 真凪 Meaning: 真True. Truth, not falsehood. Nature as it is. True form. Innate. 凪Calm (at sea) You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > マナギ Japanese Girl Names Variations.