The term "infrastructures" implies the physical and organizational structures necessary for the functioning of a society. There are several antonyms for this word, which include "disorganization," "disconnection," and "chaos." These terms imply a lack of organization or structure, which can lead to inefficiency and breakdown of societal systems. Another antonym for "infrastructures" is "undeveloped," which suggests that the necessary structures and systems are lacking altogether. Overall, antonyms for "infrastructures" highlight the importance of well-planned and maintained structures for the smooth functioning of society.