ˌself-deˈfeating BrE AmE adjective
causing even more problems, or causing exactly the same problems and difficulties that you are trying to prevent or deal with:
Constant dieting can be self-defeating.
ˌself-deˈfeating BrE AmE adjective
causing even more problems, or causing exactly the same problems and difficulties that you are trying to prevent or deal with:
Constant dieting can be self-defeating.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012