Actions Speak Louder Than Words

What does the idiom “Actions Speak Louder Than Words” mean?

Definition:

One’s character and intentions are shown more accurately by one’s actions than by one’s words.

For example:

“The boss is always talking about giving us raises, but actions speak louder than words. Let’s see if he does it.
Well, that’s good honey, but actions speak louder than words. Let’s wait a few days and see if you can really do it”

Notes:

This is a proverb.