Avestan

3 clues
Iranian language.
Thus spake Zarathustra
Ancient Iranian language
Similar answers:
Aaverage
Aaverages
Abovetheaverage
Acloseshaveaway
Actagainstants
Adamdidnthaveto
Aerospacetravel
Afghanistan
Afghanistangetz
Afghanwilltravel
Aftershave
Aftershavelotion
Aftershavetonic
Afteryouleave
Agateagave
Agave
Agavemalaria
Agavenectar
Agaves
Agreatwaytohave