identic

adjective2

1. •
   (no longer used) Identical.
2. •
   (no longer used) Precisely agreeing in sentiment or opinion and form or manner of expression; applied to concerted action or language used by two or more governments in treating with another government.

   • The English and French Governments had, on the 6th January, 1882, given to the Khedive an assurance of their support in an “identic declaration,” since known as the “dual note,” […] — 1887