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1 definition by efficacious_eruditer

defficacious

Adjective: Successful in producing a shitty results; ineffective.

Contrast with "efficacious".

The medicine was defficacious; My cough only worsened after taking it.

His defficacious work resulted in extended work hours for all his co-workers.

by efficacious_eruditer May 11, 2012

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