counterproductive

Từ điển Oxford Advanced Learner 8th

coun·ter·pro·duct·ive [counterproductive] BrE [ˌkaʊntəprəˈdʌktɪv] NAmE [ˌkaʊntərprəˈdʌktɪv] adjective not usually before noun
having the opposite effect to the one which was intended
•Increases in taxation would be counterproductive.
compare ↑productive

Example Bank:
•Introducing sanctions at this point could be politically counterproductive.
•It would be counterproductive to act hastily at this stage.