56%RatingSave Gender Masculine Usage Korean Scripts 성수(Korean Hangul) 成洙, 聖洙, etc.(Korean Hanja) Pronounced Pron. /sʌŋ.su/ [key·simplify] Meaning & History From Sino-Korean 成 (seong) meaning "completed, finished, succeeded" or 聖 (seong) meaning "holy, sacred" combined with 洙 (su), which refers to a river in China. Many other hanja character combinations are possible. Related NamesFamily Tree·Details VariantSung-Soo Categories completion, Korean, success