This page is about the slang term no-no
something that must not be done
- Wearing socks with sandals is a no-no for our kids. Their friends would tease them and say they looked ridiculous.
- Kissing in public is a no-no in many Middle Eastern countries.
almost always used with the indefinite article "a"
If you're told that something is a "no-no", it means
Contributor: Matt Errey