the world > existence and causation > existence > substantiality or concreteness > unsubstantiality or abstractness > be or make insubstantial [verb (transitive)] > deprive of substance (6)
figurative. To render light, airy, unsubstantial, etc.
transitive. To divest of substance; to render unsubstantial.
(un-, prefix2 affix 1d(a).)
transitive. To deprive of substance or substantiality.
transitive. To deprive of substance.
transitive. To make less substantial; to take away reality from.