Couth (k??th), imp. & p. p. of Can. [See Can, and cf. Uncouth.] 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.

• Marked by or possessing a high degree of sophistication.