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unfit (adj.)
[unfit 词源字典]
1540s, "not suitable" (in reference to things), from
un-
(1) "not" +
fit
(adj.). Related:
Unfitness
. In reference to persons or human qualities, attested from 1550s.
[unfit etymology, unfit origin, 英语词源]
unfit (v.)
"to render unfit," 1610s, from
unfit
(adj.), or else from
un-
(2) "reverse of" +
fit
(v.). Related:
Unfitted
;
unfitting
.