An antonym for the phrase "am turned on to" could be "am turned off by." While "am turned on to" implies excitement and interest, "am turned off by" suggests disinterest or repulsion. Other antonyms for "am turned on to" could include "am indifferent to," "am unmoved by," or "am disinterested in." These words all convey a lack of enthusiasm or connection. It's important to consider the context and tone of the phrase when searching for antonyms, as there may be multiple words that could accurately describe the opposite sentiment.