inefficacious

(in′ef i kās̸həs)

adjective

not efficacious; unable to produce the desired effect: an inefficacious medicine

Related Forms:

See inefficacious in American Heritage Dictionary 4

adjective
Not capable of producing a desired effect or result; ineffective.

Related Forms:

  • in·efˌfi·caˈcious·ly adverb
  • in·efˌfi·caˈcious·ness noun

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