ADJ.
cynical
VERB + UNSUBSTANTIVE
create
UNSUBSTANTIVE + NOUN
space
adj
Not having the form of a noun.
Not having any material substance.
Nests are formed by the removal of soil to create an unsubstantive space.
Not having any factual substance.
Labour dismisses Cameron's interest in the environment as a cynical and unsubstantive part of his attempt to decontaminate the Tory brand.