English knell

← Old English cnyllan (inherited)

← Middle English knellen (inherited)

← Middle English knillen (mention)

← Middle English knyllen (mention)

← Middle English knullen (mention)

← Proto-Germanic *knuzlijaną (inherited)

← Proto-Indo-European *gen- (derived)

→ English knoll (mention)

→ Pennsylvania German Gnall (cognate)