DICT.TW Dictionary Taiwan

 couth /ˈkuθ/
 (a.)文雅的,有禮貌的

 Couth imp. & p. p. of Can.   Could; was able; knew or known; understood. [Obs.]
 Above all other one Daniel
 He loveth, for he couth well
 Divine, that none other couth;
 To him were all things couth,
 As he had it of God's grace.   --Gower.
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 couth
      adj : used facetiously