The Avestan word mašiia-
Word mašiia-
Meaning mortal, man
Synonyms nar-, vīra-

Other words that might be of interest
hunu-š ‘son’, ahu- ‘life, existence’, āiiu- ‘age, life’, nāirī ‘woman’, napāt- ‘grandson’, amərətatāt- ‘immortality’