simpering

/S IH1 M P ER0 IH0 NG/
verb
  1. 1

    To smile in a foolish, frivolous, self-conscious, coy, or smug manner.

  2. 2

    To glimmer; to twinkle.

noun
  1. 1

    The act of one who simpers.

adjective
  1. 1

    Smug, affected, and supercilious.

Source: https://en.wiktionary.org/wiki/simper, https://en.wiktionary.org/wiki/simpering