From Wiktionary, the free dictionary
атэі́зм • (ateízm) m inan (genitive атэі́зму, uncountable)
- atheism
Declension of атэі́зм (inan sg-only hard masc-form accent-a)
- “атэізм” in Belarusian–Russian dictionaries and Belarusian dictionaries at slounik.org