The word "in-operable" suggests that something cannot function or work as intended. The antonyms for this word include words such as operative, functional, operational, workable, and viable. These words suggest that the thing or object in question is able to function, work, and perform its intended purpose. Therefore, if something is in-operable, it is important to identify the reason why it is not working and to find ways to fix it so that it can become operative and functional once again. By doing so, one can ensure that the object or system is working at its optimal capacity and can continue to perform its intended function.