The antonyms for the phrase "makes indifferent" would include words such as captivate, interest, absorb, engross, charm, fascinate, involve, excite, ignite, and electrify. These words are all used to denote an emotional or mental state that is opposite to indifference. To captivate someone means to hold them spellbound, while to interest someone means to provoke their curiosity or desire to know more. Engrossing individuals refers to giving them complete attention, and fascinating them involves stimulating their interest and admiration. Ultimately, these antonyms actively avoid the state of indifference and aim to evoke a more engaged and invested emotional response.