조기early phase 시기상조being premature 조기early morning 조로progeria 조루premature ejaculation 조루증premature ejaculation 조만간soon 조산premature delivery; premature birth 조실부모becoming an orphan early in life 조조early bird

반숙being half-cooked 성숙maturity; ripeness 친숙familiarity 미성숙immaturity 미숙being poor; being inexperienced; being unskilled 미숙련being unskilled 미숙성unskilledness 미숙아premature baby 성숙기period of maturity 성숙도maturity