croppercrop‧per /ˈkrɒpə $ ˈkrɑːpər/ 
come a cropper British English informal a)to fail in something, especially unexpectedly: 
Swedish investors have come a cropper in London. b)to accidentally fall from a horse, bicycle etc: She came a cropper on the ski slopes.
come a cropper British English informal a)to fail in something, especially unexpectedly: Swedish investors have come a cropper in London. b)to accidentally fall from a horse, bicycle etc: She came a cropper on the ski slopes.