The antonyms for the phrase "puts on front" are varied depending on the context in which it is used. In general, antonyms could include phrases like "puts on the back," "hides," or "conceals" depending on the desired effect. For instance, if one wants to put on the back seat for a particular action, then the antonym phrase would be "puts on the back" or "hides." Alternatively, if one wants to keep something hidden or out of sight, then the antonym would be "conceals" or "covers up" and so on. Overall, the antonyms of "puts on front" would be suitable for reversing its meaning or indicating the opposite intention.