The term "most turn on" means something that attracts or excites someone the most. Some antonyms or opposite terms for "most turn on" include "turn off," "repulse," "bore," and "frighten." An activity, a person or a thing that is not fascinating or attractive for someone may "turn them off" or "repulse" them. If something is dull or uninteresting, it may "bore" or "disinterest" someone. Similarly, if something is too scary or frightening, it may "frighten" someone instead of turning them on. Therefore, antonyms for "most turn on" are words that create a feeling of disinterest or discomfort in someone.