Here's what rhymes with immortalize.

Consider these alternatives

idealize / realize memorialize / size conjoin / join cheapen / region imbue / you conceptualize / size habituate / late encapsulate / late civilize / size disabuse / use coagulate / late endear / here liquify / high sanctify / fanctify scandalize / size confine / fine embed / said pulsate / state pertained / obtained contextualize / size humanize / size overgrow / no crystallize / size desensitize / size palliate / late transcend / went