내일
naeil · TOPIK 1
tomorrow
📅 來日 = come + day: the day that is coming
내 (nae) is the hanja 來, to come, and 일 (il) is 日, day. Tomorrow is literally the coming day. The same 일 ends 생일 (birthday) and 매일 (every day), so the il = day link carries over to other words.