←
West Frisian -er (cognate)
←
Proto-West Germanic *-ārī (inherited)
←
Old Frisian -ere (inherited)
→
Saterland Frisian oafters (affix)
→
Saterland Frisian Weeuwer (affix)
→
Saterland Frisian Dröömer (affix)
→
Saterland Frisian Sjunger (affix)
→
Saterland Frisian Hälper (affix)