self-defeating

American  

[self-di-fee-ting, self-] / ˈsɛlf dɪˈfi tɪŋ, ˌsɛlf- /

adjective

1. serving to frustrate, thwart, etc., one's own intention or interests.

   His behavior was certainly self-defeating.

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self-defeating British  

adjective

1. (of a plan, action, etc) unable to achieve the intended result

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Example Sentences

“I happen to think that that’s self-defeating and it doesn’t do any good.”

From The Wall Street Journal

But he immediately added that riots were “socially destructive and self-defeating.”

From The Wall Street Journal

At the time, Streeting said suggestions from Sir Keir's allies that he was seeking to challenge the leadership were "self-defeating nonsense".

From BBC

It’s an understandable reaction, but it might be self-defeating.

From Barron's

It’s an understandable reaction, but it might be self-defeating.

From Barron's