Gender Feminine Usage Korean Scripts 서윤 (Korean Hangul), 瑞潤, etc. (Korean Hanja) Pronounced Pron. SU-YOON Meaning & History From Sino-Korean 瑞 (seo) meaning "felicitous omen, auspicious" and 潤 (yun) meaning "soft, sleek", as well as other hanja character combinations.