Noun: inability ,i-nu'bi-li-tee
- Lack of ability (especially mental ability) to do something
"His inability to concentrate hindered his studies"
- Lacking the power to perform
"His inability to swim made him hesitant to join the beach party";
- unfitness
Derived forms: inabilities
Type of: cognition, noesis [technical], quality
Antonym: ability
Encyclopedia: Inability