"No worry" is generally used to signify the lack of worry, whereas "no worries" is a more ... ... <看更多>

Molly loves to use these idioms: ' no worries ' and 'It's all good'. She loves them so much that she wants to teach you about them. ... <看更多>

No worries. 3. It doesn't matter. 4. Don't apologize. 5. Forget about it. 6. Don't mention it 7. That's all right. 8. No problem. ... <看更多>