恰当 (qià dàng): เหมาะสม

At a formal business dinner, he wore a dark suit, which seemed very appropriate.

The teacher assigned appropriate homework according to each student's level, and everyone was able to finish on time.

Faced with her friend's comfort, she didn't know what would be appropriate to say, so she just nodded silently.

This report used appropriate wording and had clear logic, so it received praise from the manager.

At the wedding, the host told an appropriate joke, which immediately lightened the atmosphere.