true to his word

• adv. 遵守诺言(不失信)

true to his word的用法和样例：

例句

用作副词 (adv.)

1. We must peg them down to the promise.
   我们一定要他们遵守诺言。
2. He often fails to keep his word.
   他常常未能遵守诺言。