The antonyms for "feel return" are quite varied, depending on the intended meaning. If one means to imply the opposite of a physical sensation, then the antonyms could be "numbness," "insensitivity," or "unfeelingness." Conversely, if one means to suggest the lack of a desirable emotion, the antonyms might be "discontent," "apathy," or "indifference." In the context of returning a favor, the antonyms for "feel return" could be "ignore," "neglect," or "reject." And in terms of returning to a certain state or condition, the antonyms might be "deterioration," "degeneration," or "worsening." Ultimately, the antonyms for "feel return" are numerous and context-dependent.