守信 (shǒu xìn): Keep one's word (Verb) — Meaning & Stroke Order

He goes to school on time every day, which shows he is trustworthy.

He has never broken his word on important matters; keeping promises is a fundamental principle of his conduct.

Don't count on him; he didn't keep his word last time, and it will probably be the same this time.

In business cooperation, trustworthiness is the foundation for building long-term relationships, requiring both parties to keep their promises.

If you've agreed on a time with a friend, you should keep your word; it's the most basic courtesy.