ineptitude (n.)
- absurdity
- asininity
- awkwardness
- buffoonery
- clumsiness
- crankiness
- craziness
- disability
- disablement
- disqualification
- eccentricity
- fatuity
- fatuousness
- folly
- foolery
- foolishness
- frivolity
- frivolousness
- futility
- gaucherie
- giddiness
- idiocy
- ignorance
- imbecility
- inability
- inadequacy
- inadvisability
- inanity
- inappropriateness
- inaptitude
- inaptness
- incapability
- incapacity
- incompetence
- incompetency
- incongruity
- inconvenience
- inefficiency
- ineptness
- inexpedience
- inexpediency
- infancy
- infelicity
- inferiority
- inopportuneness
- insanity
- insufficiency
- irrationality
- lunacy
- madness
- maladroitness
- mindlessness
- minority
- queerness
- senselessness
- silliness
- stupidity
- thoughtlessness
- triviality
- undesirability
- unfitness
- ungainliness
- unprofitability
- unprofitableness
- unseasonableness
- unseemliness
- unsuitability
- unsuitableness
- untimeliness
- unwiseness
- uselessness
- wardship
- weirdness
- worthlessness
- wrongness
