반
ban · TOPIK 1
half
🌗 반 (ban) = hanja 半, half; same root as Chinese bàn and Japanese han
반 is the Korean reading of 半, the character for half, shared across Chinese (bàn) and Japanese (han). It shows up in 절반 (a half), 반년 (half a year) and 반값 (half price), so one syllable unlocks a whole family of half-words.