Wiktionary
apostatise
vb. (alternative spelling of apostatize English)
WordNet
apostatise
v. abandon one's beliefs or allegiances [syn: apostatize, tergiversate]
Usage examples of "apostatise".
Mansoul to condole her own misery when she had apostatised from her rightful King, but didst evade, and at all times turn her mind awry from those thoughts that had in them a tendency to lead her to repentance.
The first is of those who, being initiated in the Mosaical rites, and made citizens of that commonwealth, did afterwards apostatise from the worship of the God of Israel.