
Monica's lack of sincerity made it seem to Trent that she didn't think she did anything wrong.
Sincerity is the quality of being honest, true and real.
An example of sincerity is a person who really means everything that he promises.
sincerity

the quality or state of being sincere; honesty, genuineness, good faith, etc.
Origin of sincerity
Middle French sincérité from Classical Latin sinceritassincerity

noun
The quality or condition of being sincere; genuineness, honesty, and freedom from duplicity.
sincerity

Noun
(countable and uncountable, plural sincerities)
Antonyms
Origin
From Middle French sincérité.