The Collaborative International Dictionary of English v.0.48:

Douce \Douce\, a. [F. doux, masc., douce, fem., sweet, fr. L.
   duleis sweet.]
   1. Sweet; pleasant. [Obs.]
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   2. Sober; prudent; sedate; modest. [Scot.]
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            And this is a douce, honest man.      --Sir W.
                                                  Scott.
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