'Simper' definitions:

Definition of 'simper'

noun

A silly self-conscious smile

verb

Smile affectedly or derisively [syn: smirk, simper]

From: GCIDE

Simper \Sim"per\, n. A constrained, self-conscious smile; an affected, silly smile; a smirk. [1913 Webster]
The conscious simper, and the jealous leer. --Pope. [1913 Webster]

From: GCIDE

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. [1913 Webster]
Behold yond simpering dame. --Shak. [1913 Webster]
With a made countenance about her mouth, between simpering and smiling. --ir. P. Sidney. [1913 Webster]
2. To glimmer; to twinkle. [Obs.] [1913 Webster]
Yet can I mark how stars above Simper and shine. --Herbert. [1913 Webster]