incapability (n.)
- disability
- disablement
- disqualification
- imbecility
- improvisation
- inability
- inadequacy
- inaptitude
- inaptness
- inattentiveness
- incapacity
- incompetence
- incompetency
- ineffectiveness
- ineffectuality
- inefficiency
- ineptitude
- ineptness
- infancy
- inferiority
- insufficiency
- maladjustment
- maladroitness
- mediocrity
- minority
- rustiness
- thoughtlessness
- unfitness
- unskillfulness
- unsuitability
- unsuitableness
- vulnerability
- wardship
