We don't have synonyms for hypostatise yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are hypostasis, apostatise and hypostatize.
(v) :
Alternative form of hypostatize. [(transitive) To render into, or regard as, a separate and distinct substance; to construe a contextually-subjective and complex abstraction, idea, or concept as a universal object without regard to nuance or change in character.]
(v) :
Alternative form of hypostatize. [(transitive) To render into, or regard as, a separate and distinct substance; to construe a contextually-subjective and complex abstraction, idea, or concept as a universal object without regard to nuance or change in character.]