Save Gender Masculine Usage Japanese Scripts 温安, 篤康, 敦坦, etc.(Japanese Kanji) Pronounced Pron. AH-TSOO-YAH-SOO [key] Meaning & History From Japanese 温 (atsu) meaning "warm", 篤 (atsu) meaning "deep, true, sincere" or 敦 (atsu) meaning "honest" combined with 安 (yasu) meaning "peace, quiet", 康 (yasu) meaning "peaceful" or 坦 (yasu) meaning "flat, smooth, level".