incompetence (n.)
- baseness
- deficiency
- disability
- disablement
- disqualification
- failure
- faultiness
- fewness
- imbecility
- imperfection
- improvisation
- inability
- inadequacy
- inadequateness
- inaptitude
- inaptness
- inattentiveness
- incapability
- incapacity
- incompetency
- ineffectiveness
- ineffectuality
- inefficiency
- ineptitude
- ineptness
- infancy
- inferiority
- insufficiency
- littleness
- maladjustment
- maladroitness
- meanness
- mediocrity
- minority
- pettiness
- rustiness
- shabbiness
- smallness
- subnormality
- thoughtlessness
- triviality
- unfitness
- unskillfulness
- unsuitability
- unsuitableness
- uselessness
- vulgarity
- vulnerability
- wardship