Sincerity in English is sincere.

All forms of sincere: comparative sincerer, superlative sincerest, adverb sincerely, noun sincereness. Usage: To express sincerity or authenticity in feelings or behavior, and also to express someone's frankness and forthrightness.

English quotes about sincerity

1. Only the sincerity, honesty. Greathonestyiswisdom (Only sincerity can lead to integrity. Great integrity is actually great wisdom).

2. Honesty and diligence should be your permanent partners.

3. A man of integrity should know self-respect in whatever place.

4. Lost the truth, at the same time also lost the beauty (lost the truth and lost the beauty at the same time).

5. Lost credit people, nothing to lose (people who have lost their credit have nothing to lose).