Gender Masculine Usage Korean Scripts 준서(Korean Hangul) 俊舒, 俊瑞, etc.(Korean Hanja) Pronounced Pron. CHOON-SU Meaning & History From Sino-Korean 俊 (jun) meaning "talented, handsome" combined with 舒 (seo) meaning "open up, unfold, comfortable, easy" or 瑞 (seo) meaning "felicitous omen, auspicious". This name can be formed by other hanja character combinations as well.