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adjectivenot producing an intended effect
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Opposite: -
adjectivelacking in power or forcefulness
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adjectivelacking the ability or skill to perform effectively; inadequate
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Words sounding like good ineffective
detective effective perspective objective collective protective defective respective selective subjective directive ineffective prospective reflective retrospective elective corrective connective irrespective affective invective perfective mentally defective free perspective foul invective distant perspective angular perspective store detective private detective police detective