←
Old English sēoc (inherited)
←
Middle English sik (inherited)
←
Middle English sike (mention)
←
Middle English seek (mention)
←
Middle English seke (mention)
←
Middle English seok (mention)
←
West Frisian siik (cognate)
←
Proto-Germanic *seukaz (inherited)
←
Proto-West Germanic *seuk (inherited)
←
Proto-Indo-European *sewg- (derived)
←
Middle Irish socht (cognate)
←
Norwegian Bokmål syk (cognate)
←
Norwegian Nynorsk sjuk (cognate)
→
Norwegian Nynorsk sjuk (cognate)
→
Old Norse sjúkr (cognate)
→
Saterland Frisian süük (link)
→
Tok Pisin sik (derived)