sincerity

真誠、誠懇、誠意

I don't doubt his sincerity, but I question his judgment.

我不懷疑他的誠意，但我對他的判斷有疑慮。

真心、由衷

She thanked the volunteers with obvious sincerity in her voice.

她向志工道謝時，語氣中充滿真心。

率真、質樸

The songs are simple, but their sincerity moves every audience.

這些歌雖然簡單，但那份率真感動了每一位聽眾。

誠心地、由衷地

In all sincerity, I think you should take the job.

我由衷地認為你應該接下這份工作。