ineffective

/ɪnɪfˈɛktɪv/

/ˌɪnɪˈfɛktɪv/

ineffective

unable to have any effect or achieve the intended results

antonyms : effective

lacking in power or forcefulness

lacking the ability or skill to perform effectively; inadequate

Examples

1. The shock was ineffective.

2. Ineffective against a virus people.

3. The South Vietnamese military was largely ineffective due to massive corruption, low morale and little training.

4. A bigger team would be just ineffective.