Inability

n. [Prefix in, not, and ability; Fr. inhabileté, Sp. inhabilidad, It. inabilità, from Lat. inhabilis, unable; prefix in, not, and habilis. See ABLE.] The quality of being unable; lack of ability; want of sufficient physical power or strength, or resources; defect of requisite moral or intellectual capacity.

It is not from an inability to discover what they ought to do, that men err in practice. Blair.

Synonyms—Disability; impotence; incapacity; incompetence; weakness. See DISABILITY.