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subtility (n.)
[subtility 词源字典]
late 14c., "acuteness, skill, cunning," alteration of
subtlety
(q.v.) on model of
subtile
, or else from Old French
subtilite
, from Latin
subtilitas
"fineness, simplicity."
[subtility etymology, subtility origin, 英语词源]
[subtility 词源字典]