Sincerity is a mix of seriousness and honesty. If you do things with sincerity, people will trust you.

Pronunciation: / sɪn'sɪərəti/
English description: the quality of being open and truthful
Synonyms: truthfulness
Chinese Translation: 诚挚(cheng2 zhi4)
Spanish Translation: la sinceridad
ORIGIN: Along with patience and compassion, sincerity is one of those qualities we all probably wish we had more of — and wish other people had more of, too. People who show sincerity are being serious, kind, and truthful. Politicians who show sincerity tend to do well because people believe them. An apology full of sincerity will probably be accepted. On the other hand, if you show no sincerity — by being sarcastic or dismissive — well, who wants an apology like that?

EXAMPLE SENTENCE:

It is a suspicion that makes people question their neighbors’ motives, their sincerity and their intelligence.
I don't question his sincerity in really believing that it's good for the country but it also happens to be extraordinarily good for himself, too.

*New word description, story and part of "EXAMPLE SENTENCE" are cited in Vocabulary