Ineffective
Synonyms: Unsuccessful, unproductive, profitless, abortive, futile, worthless, ineffectual, inefficacious, vain, to no effect, feeble, inept, bootless, inutile, impotent, incapable, poor, non-successful, fruitless, unprofitable, failed, purposeless, useless, inefficient, inadequate, unavailing, idle, weak, lame, unfructuous, powerless, incompetent, unfit, and hopeless.
Example Sentences
The medicine was ineffective against the infection.
His attempts to fix the problem were ineffective.
The old strategy proved ineffective in the new market.
The plan was ineffective without proper resources.
The warnings were ineffective in preventing accidents.
The team’s efforts were ineffective without coordination.
The security measures were ineffective during the breach.
The policy was ineffective in reducing pollution.
His arguments were ineffective in convincing the jury.
The training was ineffective for inexperienced workers.