#inaptitude  a lack of aptitude
  exclusion:  #aptitude
  supertype:  #inability  lack of ability (especially mental ability) to do something
  subtype:  #talentlessness  a lack of talent
  subtype:  #incapableness__incapablenes  lack of potential for development
     subtype:  #imperfectibility__imperfectability  the incapability of becoming perfect

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