Norwegian Nynorsk styk-

← English step- (cognate)

← Proto-Germanic *steupa- (inherited)

← Icelandic stjúp (cognate)

← Norwegian Nynorsk ste- (doublet)

← Old Norse stjúk- (inherited)

← Old Norse stýk- (mention)

← Old Norse stjúp- (derived)

← Swedish styv- (cognate)

→ Norwegian Nynorsk styksyster (affix)

→ Norwegian Nynorsk styksøster (affix)