No problem Definition 1 of 3Pro Tip 1/3Casual Acceptance Use 'no problem' to informally accept a request or thank someone casually. Thanks for lending me your book – No problem! Pro Tip 2/3Subtle Reassurance 'No problem' can reassure someone that their request isn't a burden to you. Do you mind waiting for ten minutes? No problem. Pro Tip 3/3Offering Help Say 'no problem' to offer help in a friendly, approachable way. If you need help with your project, it's no problem for me!