诚实
chéngshí
honest, truthful
adjective
Example
他是一个很诚实的人，从来不说谎。
Tā shì yí gè hěn chéngshí de rén, cónglái bù shuōhuǎng.
He is a very honest person who never lies.
An important character trait word that's frequently used in both formal and informal contexts. Can also be used as an adverb (诚实地).