English

irreligionism

From in- + religion + -ism.

Formed from in + religion + ism

Proto-Indo-European *h₁én ‘in’

Proto-Germanic *in

Proto-West Germanic *in

Old English in

Middle English in ‘inside’

English in

Latin religiō ‘scrupulousness’

Old French religion

Middle English religioun

Today it means

noun Abstinence from religion.

Language periods are conventional ranges, not dates for this word.

Etymograph / irreligionism