SINCER'ITY, noun [Latin sinceritas.] 1. Honesty of mind or intention; freedom from simulation or hypocrisy. We may question a man's prudence, when we cannot question his sincerity 2. Freedom from hypocrisy, disguise or false pretense; as the sincerity of a declaration or of love.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI