The antonyms for the word "infrastructures" are loosely defined as "superficial" or "above-ground" entities. These may include non-essential or non-critical features, accessories, or embellishments that do not form a central part of any system. For example, trees, streams, and other natural features of a landscape may be considered antonyms to infrastructure because they are not man-made and do not have the same type of interconnectivity as a road system, for instance. Other antonyms for infrastructures may also include individual or isolated structures, buildings, or facilities that are not part of a larger, complex system. Overall, the antonyms for infrastructure are natural, independent, or superficial features that lack the interdependence and integration of an infrastructure.