in·abil·i·ty /ˌɪnəˈbɪləti/
無能,無力
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.
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inability
n 1: lack of ability (especially mental ability) to do something
[ant: ability]
2: lacking the power to perform [syn: unfitness] [ant: ability]