Antonyms of noun aptitude

1 sense of aptitude

Sense 1
aptitude -- (inherent ability)
       Antonym of inaptitude (Sense 1)
      => inaptitude -- (a lack of aptitude)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun aptitude

1 sense of aptitude

Sense 1
aptitude -- (inherent ability)
       => ability, power -- (possession of the qualities (especially mental qualities) required to do something or get something done; "danger heightened his powers of discrimination")