counterproductiveadj.

1959 D. D. Eisenhower in Publ. Papers Presidents U.S. (1960) 3 Aug. 563 The holding of a summit meeting..would be..absolutely impractical and as the State Department says, counterproductive.

1964 Ann. Reg. 1963 166 These tactics were not only useless but counter-productive.

1969 Spectator 13 Dec. 816/2 So far as actually winning a single teenage vote is concerned, the efforts of both major parties..are likely to be counter-productive.

1970 Guardian 19 Sept. 10/3 Israel's counter-productive deep bombing.

1977 P. Johnson Enemies of Society xiv. 189 The realization that British industrial unions, while totally unsuccessful—indeed counter-productive—in terms of the international wages structure, had achieved a tremendous..series of victories over middle-class workers, set up..a wave of syndicalist panic among the bourgeoisie.

1982 S. Bellow Dean's December x. 192 Corde had very nearly spoken his full mind. The results, in the lingo people were using nowadays, were ‘counterproductive’.