D defs.my
Entry 1 sense Webster, 1913

Inefficiency

/ĭnˌ-ĭf-ĭsh'-ən-sē/ · In·ef·fi·cien·cy · IPA /ˌɪnɪfˈɪʃənsiː/
01 n. The quality of being inefficient; lack of power or energy sufficient for the desired effect; inefficacy; incapacity; as, he was discharged …
  1. 1.
    The quality of being inefficient; lack of power or energy sufficient for the desired effect; inefficacy; incapacity; as, he was discharged from his position for inefficiency.