Antonyms of noun sincerity

1 of 4 senses of sincerity

Sense 2
sincerity -- (the quality of being open and truthful; not deceitful or hypocritical; "his sincerity inspired belief"; "they demanded some proof of my sincerity")
       Antonym of insincerity (Sense 1)
      => insincerity, falseness, hollowness -- (the quality of not being open or truthful; deceitful or hypocritical)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun sincerity

4 senses of sincerity

Sense 1
earnestness, seriousness, sincerity -- (an earnest and sincere feeling)
       => gravity, solemnity -- (a solemn and dignified feeling)

Sense 2
sincerity -- (the quality of being open and truthful; not deceitful or hypocritical; "his sincerity inspired belief"; "they demanded some proof of my sincerity")
       => truthfulness -- (the quality of being truthful)

Sense 3
sincerity, unassumingness -- (a quality of naturalness and simplicity; "the simple sincerity of folk songs")
       => naturalness -- (the quality of being natural or based on natural principles; "he accepted the naturalness of death"; "the spontaneous naturalness of his manner")

Sense 4
seriousness, earnestness, serious-mindedness, sincerity -- (the trait of being serious; "a lack of solemnity is not necessarily a lack of seriousness"- Robert Rice)
       => trait -- (a distinguishing feature of your personal nature)