Sincere True Sincerity in Chinese / Japanese...

zhēn chéng

진성

真誠 is the true essence of sincerity. It takes strength of personality to be truly sincere without over-doing it. Speaking of strength, this is probably the strongest way to convey the idea of sincerity in the Chinese language without over-doing it.

The first character literally means true, real, and genuine. While the second character means sincere and honest.

See Also:  Love | Honor

zhì chéng

shisei

지성

至誠 is the idea that you enter into something with the utmost sincerity and fidelity. Ideas such as devotion, honesty, and "one's true heart" are also contained in this word.

至誠 is a universal word as the Chinese, Japanese Kanji, and Korean Hanja are all identical.

zhēn xīn

mago koro

While these two characters literally read as "true heart" or "genuine heart," the understood meaning is sincerity, devotion, sincere, or heartfelt. Some will extend the meaning to be like, "true love." Basically, it's the idea of doing something or treating someone with genuine feelings.

真心 is valid and has the same meaning in both Chinese characters and Japanese Kanji.

Note: While not too common, this can be the female given name "Mami" in Japanese.