The original spelling of the word Antarctic in English left out the first c, which was reintroduced into the spelling apparently at the beginning of the 17th century, most likely in a conscious effort to make the English word conform more closely to its Greek ancestor. The spelling with the c is now, of course, the only acceptable one, but the pronunciation with the c is not. Both (nt-ärk´tk) and (nt-är´tk) are equally acceptable.