Inter-relationship refers to the connection or relation between two or more things, making them dependent on each other. However, there are several antonyms of the word inter-relationship that indicate the opposite. One antonym of inter-relationship is disconnection, which refers to the state of being separate or detached. Other antonyms include detachment, separation, and isolation, indicating a lack of connection or relationship between things. Moreover, other antonyms such as independence, autonomy, and detachment describe the ability to operate separately without any dependence on other factors. All these antonyms of inter-relationship indicate a state of individuality, disconnection, and independence, rather than a mutual or dependent relationship.