←
Proto-Germanic *tehun (inherited)
←
Proto-Indo-European *déḱm̥ (inherited)
←
Old Frisian tiān (inherited)
→
North Frisian tin (cognate)
→
North Frisian tiin (cognate)
→
North Frisian tain (cognate)
→
North Frisian tjiin (cognate)
→
Saterland Frisian tjoon (cognate)