fatuity (n.)
- absurdity
- aimlessness
- asininity
- blankness
- buffoonery
- crankiness
- craziness
- eccentricity
- emptiness
- failure
- fatuousness
- fecklessness
- folly
- foolery
- foolishness
- frivolity
- frivolousness
- fruitlessness
- futility
- giddiness
- hollowness
- idiocy
- imbecility
- impotence
- inanity
- ineffectiveness
- ineffectuality
- ineffectualness
- inefficaciousness
- inefficacy
- ineptitude
- insanity
- invalidity
- lunacy
- madness
- meaninglessness
- mindlessness
- nirvana
- oblivion
- passivity
- pointlessness
- purposelessness
- queerness
- quietism
- senselessness
- silliness
- stupidity
- thoughtlessness
- tranquillity
- triviality
- unproductiveness
- unprofitability
- unprofitableness
- uselessness
- vacancy
- vacuity
- valuelessness
- vanity
- weirdness
- worthlessness