The antonyms for the phrase "made inert" would be words that denote activity or liveliness. Vivacious, lively, active, energetic, dynamic, and animated are all antonyms to being made inert. Inert means lacking in energy or motion, and antonyms introduce the opposite concept. When something is vivacious or animated, it is lively and full of exuberance. In contrast, when something is made inert, it is in a state of rest, lacking motion or energy. So, if you want to communicate the opposite of being made inert, use words that indicate liveliness, motion, and energy.