acceptation

Acceptation is older than its synonym acceptance; it first appeared in print in the 15th century, whereas acceptance makes a 16th-century appearance. Grammarian H. W. Fowler insisted in 1926 that acceptation and acceptance were not actually synonymous (he preferred to reserve acceptation for the "accepted meaning" use), but the earliest meaning of acceptation was indeed acceptance. Both words descend from the Anglo-French word accepter ("to accept"), but acceptation took an extra step. Anglo-French added the -ation ending, which was changed to form acceptacioun in Middle English. (English embraced the present-day -ation ending later.) Acceptance simply comes from accepter plus the Anglo-French -ance.