self-defeating

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

adjective

serving to frustrate, thwart, etc., one's own intention or interests: His behavior was certainly self-defeating.

Example sentences from the Web for self-defeating

British Dictionary definitions for self-defeating

self-defeating

adjective

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