What is another word for unsubstantialize?
Pronunciation: [ʌnsəbstˈanʃə͡lˌa͡ɪz] (IPA) 
Unsubstantialize refers to making something insubstantial, immaterial, or non-existent. There are a few synonyms we can use to convey the same meaning, some of which include vanishing, evaporating, fading, evaporating, melting away, disappearing, and dissolving. All these terms imply a process of disappearance or transformation from a tangible or perceptible state to an immateriel or unperceivable one. For example, the sun sets, and the day evaporates, fading into the night. Similarly, a ghost seems to vanish into thin air, and an ice cube melts away on a hot day. These synonyms can be used interchangeably depending on the context and the degree of non-existence or immaterialization implied in the sentence.
