선배senior; veteran 우선priority; preference 대선배senior; veteran 선생teacher; instructor 선약prior appointment 선진being advanced 선진국advanced country; developed country 여선생female teacher 우선first of all; to begin with; before everything 우선적priority

담임homeroom teacher; being in charge of class 임무mission; duty; assignment 책임duty; responsibility; obligation 책임감sense of responsibility 책임자person in charge 초임first post; first duty 취임inauguration; taking office 취임사inaugural address; inauguration speech 취임식inauguration; inaugural ceremony 퇴임retirement