English sicken

← Danish sygne (cognate)

← English sick (suffix)

← English en (suffix)

← Middle English sekenen (inherited)

← Icelandic sjúkna (cognate)

← Norwegian sykne (cognate)

← Swedish sjukna (cognate)

→ English ug (link)

→ English sickener (suffix)

→ English sickeneth (suffix)

→ English sickenest (suffix)