D defs.my
Entry 1 sense Webster, 1913

Insincerity

· In·sin·cer·i·ty · IPA
01 n. The quality of being insincere; lack of sincerity, or of being in reality what one appears to be; dissimulation; hypocritical; deceitfulnes…
  1. 1.
    The quality of being insincere; lack of sincerity, or of being in reality what one appears to be; dissimulation; hypocritical; deceitfulness; hollowness; untrustworthiness; as, the insincerity of a professed friend; the insincerity of professions of regard.
    “What men call policy and knowledge of the world, is commonly no other thing than dissimulation and insincerity.” — Blair.