ineptness
in-ept-ness
noun
The state of being unskilful, clumsy, or generally incompetent.
"Her ineptness in the kitchen was quite apparent."
Thesaurus
Synonyms: unsuitableness, unsuitability, slowness, clumsiness, maladroitness, awkwardness, ineptitude
Antonyms: suitability, suitableness