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disable (v.)
[disable 词源字典]
mid-15c., from
dis-
"do the opposite of" +
ablen
(v.) "to make fit" (see
able
). Related:
Disabled
;
disabling
. Earlier in the same sense was
unable
(v.) "make unfit, render unsuitable" (c. 1400).
[disable etymology, disable origin, 英语词源]