self-defeating 
adjective
(Of an action) preventing rather than achieving a desired result; futile: courage without wariness is ultimately self-defeating the self-defeating quality of much human behaviour...
- It seems to me that the idea is rather self-defeating.
- Seldom will so much hot air have been expended by so many for such a meanly self-serving and self-defeating result.
- Rather than being self-defeating, successful players are their own best friends.
Rhymes
- whither
- whithersoever
- whiting
- whiting-pollack
- whiting pout
- whitish
- whitishness
- Whitlam, Gough
- whitleather
- Whitley Council
- whitling
- whitlow
- whitlow-grass
- Whitman, Christine Todd
- Whitman, Walt
- Whitney, Eli
- Whitney, Gertrude Vanderbilt
- Whitney, Mount
- whitster
- Whitsun
- Whitsun ale
- Whit Sunday
- Whitsunday
- Whitsun eve
- Whitsun gilliflower