Source : Webster's Revised Unabridged Dictionary (1913)

Complaisant \Com"plai*sant\, a. [F. complaisant, p. pr. of
   complaire to acquiesce as a favor, fr. L. complacere. See
   {Complacent}.]
   Desirous to please; courteous; obliging; compliant; as, a
   complaisant gentleman.

         There are to whom my satire seems too bold: Scarce to
         wise Peter complaisant enough.           --Pope.

   Syn: Obliging; courteous; affable; gracious; civil; polite;
        well-bred. See {Obliging}. -- {Com"plai*sant`ly}, adv.
        -- {Com"plai*sant`ness}, n.

Source : WordNet®

complaisant
     adj : showing a cheerful willingness to do favors for others; "to
           close one's eyes like a complaisant husband whose wife
           has taken a lover"; "the obliging waiter was in no
           hurry for us to leave" [syn: {obliging}]