Infrastructure, by definition, refers to the basic physical and organizational structures needed for the operation of a society or enterprise. The opposite or antonym of infrastructure could be deconstruction, which means the breaking down of these same structures. Another antonym could be dislocation, which refers to the removal or distance of crucial systems, resulting in the disarray of operations. Other possible antonyms include dismantling, removal, demolition, and disintegration. All these words signify the destruction or removal of the basic structures that support the functioning of a society or business. While infrastructure represents stability, development, and growth, the antonyms convey the opposite - instability, regression, and decay.