1. Cut a piece of onion and put it on the knife while cutting the onions to avoid tearing.
2. Put the onions in the freezer for 30 minutes before cutting them.
3. Microwave the onion for 20 seconds before cutting.
4. Chew something while cutting onions.
5. Soak the onion in warm water before cutting.
6. Cut the root of the onion at last.
7. Use a sharp knife so that fewer enzyme is released while cutting the onion.