Webster 1913 Edition
The quality of being insincere; lack of sincerity, or of being in reality what one appears to be; dissimulation; hypocritical; deceitfulness; hollowness; untrustworthiness;
insincerityof a professed friend; the
insincerityof professions of regard.
What men call policy and knowledge of the world, is commonly no other thing than dissimulation and
Webster 1828 Edition
1.Deceitfulness; hollowness; used of things; as the insincerity of professions.