irreligionizev.
Etymology: formed as irreligionist n. + -ize suffix.Previous versions of the OED give the stress as: irreˈligionize.
1854 S. Wilberforce Let. in R. G. Wilberforce (1881) II. 261 Romanizing a few, irreligionizing a multitude.
This entry has not yet been fully updated (first published 1900; most recently modified version published online September 2019).