The antonyms for the word "in-dependency" are dependence, reliance, subordination, and subjection. Dependence refers to the state of being reliant on someone or something for support or assistance. On the other hand, subordination implies being subject to someone or something else's authority or control. Similarly, subjection connotes being under someone else's power or dominion. Finally, reliance denotes the act of depending on something or someone for support or aid. Overall, these antonyms show that "in-dependency" is opposite to the state of being controlled, dominated, or relying on others.