이전previous time; before 이후later time; the future 이내within; less than; not more than 이외the others; being other than 이하and below; and less 이남south 이래since 이북north 이실직고telling of the truth 이심전심mental communication; telepathy

상하up and down 상수tap water 세상world 영상temperature above zero 탁상시계table clock 향상improvement; enhancement; progress 사상being in history 상good; top 상급반upper grades; higher grades 상급생senior student; upper classmen