Manx croo

← Proto-Celtic *kʷritus (inherited)

← Proto-Indo-European *kʷer- (root)

← Proto-Indo-European *[[kʷer-]] (derived)

← Old Irish cruth (inherited)

→ Manx yl-chrooaght (confix)

→ Manx yl-chrooagh (affix)

→ Manx co-chrooagh (affix)

→ Manx co-chrooaght (confix)

→ Manx aachroo (prefix)