Source : Webster's Revised Unabridged Dictionary (1913)

Simpering \Sim"per*ing\,
   a. &. n. from {Simper}, v.

Simper \Sim"per\, v. i. [imp. & p. p. {Simpered}; p. pr. & vb.
   n. {Simpering}.] [Cf. Norw. semper fine, smart, dial. Dan.
   semper, simper, affected, coy, prudish, OSw. semper one who
   affectedly refrains from eating, Sw. sipp finical, prim, LG.
   sipp.]
   1. To smile in a silly, affected, or conceited manner.

            Behold yond simpering dame.           --Shak.

            With a made countenance about her mouth, between
            simpering and smiling.                --ir. P.
                                                  Sidney.

   2. To glimmer; to twinkle. [Obs.]

            Yet can I mark how stars above Simper and shine.
                                                  --Herbert.