Pledge (noun) – A serious or formal promise

To remember the definition of the word pledge, use the following mnemonic:

Please don't eat my wedge (pledge) of cheese. I need you to make a formal promise that you won't.

Examples of pledge in a sentence

Before our lessons started, we all had to pledge allegiance to the flag.

We are asking people to pledge their support for our anti-littering campaign.

To make sure he didn't lie, the court made John pledge to tell the truth.