ineffective

in|ef|fec|tive /'ɪnɪf'ektɪv/
[ADJ]
If you say that something is ineffective, you mean that it has no effect on a process or situation.
Economic reform will continue to be painful and ineffective...
effective
ineffectiveness [N-UNCOUNT]
...the ineffectiveness of some of the police's anti-crime strategies.

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