上司
shàngsī · HSK 7
superior
👔 上司 = 上 above + 司 manage = the one above who manages you = boss
司 means to take charge or manage (as in 公司 company). Put 上 above it and you get the person managing from above — your superior or boss.
上 — horizontal line above a baseline
上 is an indicative character (指事): a short stroke placed above a longer reference line shows the concept of 'above' or 'up'. The earliest oracle-bone forms used two horizontal lines for this; the modern shape added a vertical stroke for clarity. The core meaning of 'upper, above, to ascend' has stayed stable for millennia.