mag-r
In English, mag-r means:
mag-r- n prefix added to verbs to form nouns which refer to one who does [verb] on a regular basis.
Magbabantay, Watchman.
Magsusúlat, Writer.
Magpapatigayun, Businessman.
Magyuyutà, Landowner or farmer.
Magbubúhat, The Creator (God) or one who does.