Antonyms of adj implemental

1 sense of implemental

Sense 1
implemental, instrumental, subservient -- (serving or acting as a means or aid; "instrumental in solving the crime")

INDIRECT (VIA helpful) -> unhelpful -- (providing no assistance)

Similarity of adj implemental

1 sense of implemental

Sense 1
implemental, instrumental, subservient -- (serving or acting as a means or aid; "instrumental in solving the crime")
       => helpful (vs. unhelpful) -- (providing assistance or serving a useful function)