←
Proto-Germanic *-iskaz (inherited)
←
Proto-Indo-European *lewh₃- (root)
←
Proto-Indo-European *h₂epó (derived)
←
Proto-Indo-European *swé (mention)
←
Proto-Indo-European *lewh₃- (derived)
←
Proto-Indo-European *-iskos (inherited)
←
Proto-Italic *ab (derived)
←
Norwegian Bokmål isk (suffix)
←
Old Norse -iskr (inherited)