←
Old English fēorþa (inherited)
←
Middle English fourthe (inherited)
←
Middle English four (mention)
←
Middle English ferthe (mention)
←
West Frisian fjirde (cognate)
←
Proto-West Germanic *feurþō (inherited)
←
German Low German feerde (cognate)
←
German Low German feerd (mention)
←
Saterland Frisian fjädde (cognate)
←
Saterland Frisian fjoode (mention)
→
English forth (mention)
→
English Forth (mention)
→
Japanese フォース (borrowed)
→
Norwegian Nynorsk kvart (link)
→
Pennsylvania German viert (cognate)