Crossword clues for the word: AVESTAN The word AVESTAN has appeared as an answer to at least 7 crossword clues on different crossword puzzles. Crossword clues for AVESTAN Showing 1 to 7 of 7 results Clue(s) Ancient Iranian language Article about goddess connected with sacred writings Of the sacred books of Persia. Old Iranian language used today as the liturgical language of the Zoroastrian faith Old Iranian language. This spake Zarathustra in article about goddess Thus spake Zarathustra