In·a·bil·i·ty n. The quality or state of being unable; lack of ability; lack of sufficient power, strength, resources, or capacity.
It is not from an inability to discover what they ought to do, that men err in practice. --Blair.
Syn: -- Impotence; incapacity; incompetence; weakness; powerlessness; incapability. See Disability.
n 1: lack of ability (especially mental ability) to do something
2: lacking the power to perform [syn: unfitness] [ant: ability]