apostatise

Inflections of 'apostatise' (v): (⇒ conjugate)

apostatises

v 3rd person singular (UK)

apostatising

v pres p (UK)

apostatised

v past (UK)

apostatised

v past p (UK)

WordReference Random House Unabridged Dictionary of American English © 2025

a•pos•ta•tize  (ə pos′tə tīz′), v.i., -tized, -tiz•ing. 

1. to commit apostasy.

Also,[esp. Brit.,] a•pos′ta•tise′. 

• Late Latin apostatīzāre. See apostate, -ize
• 1545–55;

a•pos•ta•tism  (ə pos′tə tiz′əm), n. 

Collins Concise English Dictionary © HarperCollins Publishers::

apostatize, apostatise / əˈpɒstəˌtaɪz/ verb

1. (intransitive) to forsake or abandon one's belief, faith, or allegiance