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

Despite facing many difficulties, he still chose to keep his word and fulfilled his original promise.

Can you guarantee that you will keep your word this time and not change the plan at the last minute?

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

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