Hypostatise is a verb that means to treat something abstract as if it were concrete or real. There are several synonyms for this word, including concretize, materialize, objectify, and substantiate. Concretize literally means to make something more concrete, while materialize means to bring something into existence or make tangible. Objectify means to treat something as a physical object, while substantiate means to provide evidence to support something. Other synonyms for hypostatise include actualize, embody, incarnate, and literalize. These words all reflect the process of taking something abstract and making it more tangible or concrete in some way.