DuckCorp Dico

Found one definition

1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   Unruffled \Un*ruf"fled\, a. [Pref. un- not + ruffled.]
      Not ruffled or agitated; smooth; calm; tranquil; quiet.
      [1913 Webster]
            Calm and unruffled as a summer's sea.    --Addison.
      [1913 Webster] Unruinate