What does the cryptic crossword clue "Certainly it's not Far Eastern in origin (7)" mean?

The definition is "origin". The wordplay uses an anagram. anagram of EASTERN = NEAREST; definition: "Certainly it's not Far" The answer is NEAREST.

Certainly it's not Far Eastern in origin (7)

Guardian Cryptic #27233 | 14 Across | 2017-06-26 flower