borgermester (Middle Low German) comes from Norwegian Bokmål mester, from Old Norse meistari, from Middle Low German meister, from Old Saxon mēstar, from Old French maistre, from Latin magister, from Proto-Italic magisteros, from Proto-Indo-European méǵh₂isteros — big, great.
Ancestry of “borgermester”, step by step
borgermester traces back through 3 separate lines of ancestry.