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inability (n.)
[inability 词源字典]
mid-15c.,
inhabilite
, "disqualification for office," from
in-
(1) +
ability
. Earlier was
unability
"incapability; incompetence" (late 14c.). General sense by c. 1500.
[inability etymology, inability origin, 英语词源]
[inability 词源字典]