wouldn't
uk/ˈwʊd.ənt/us/ˈwʊd.ənt/short form of would not:
I wouldn't do that if I were you.
More examples
- Wouldn't you like to come with us?
- I wouldn't eat all that, if I were you.
- He wouldn't take his coat off.
- I wouldn't be surprised if he doesn't turn up.
- I wouldn't ever hit a child.