Double-check (verb)

1. To check or verify something a second time to ensure accuracy or completeness.
2. To confirm or verify something that has already been checked.

Origin:

The phrase double-check is a compound of two words double and check, it means to check twice or verify something twice.

Examples:

1. I double-checked the spelling before I submitted the document.
2. She double-checked the math to make sure there were no mistakes.
3. He double-checked the packing list to make sure he hadn't forgotten anything.
4. I'll double-check the flight schedule before I book the tickets.
5. She double-checked the recipe to make sure she had all the ingredients before she started cooking.