acrus

Etymology
Reassignment of Classical Latin from the third declension to the first/second, facilitated by the fact that the nominative singular  can itself be taken as a second declension form, initially yielding a paradigm  (compare Classical Latin  'black'). The wide distribution of its descendants across the branches of Romance implies that its presence in the oral language considerably predates its appearance in writing.

Descendants

 * Balkan Romance:
 * Italo-Romance:
 * North Italian:
 * Gallo-Romance:
 * Ibero-Romance:
 * Insular Romance:
 * North Italian:
 * Gallo-Romance:
 * Ibero-Romance:
 * Insular Romance:
 * Gallo-Romance:
 * Ibero-Romance:
 * Insular Romance:
 * Gallo-Romance:
 * Ibero-Romance:
 * Insular Romance:
 * Ibero-Romance:
 * Insular Romance:
 * Ibero-Romance:
 * Insular Romance:
 * Ibero-Romance:
 * Insular Romance:
 * Ibero-Romance:
 * Insular Romance:
 * Ibero-Romance:
 * Insular Romance:
 * Insular Romance:
 * Insular Romance:
 * Insular Romance:
 * Insular Romance:
 * Insular Romance:
 * Insular Romance: