This phrase is not exactly a slang term, but a common saying or proverb in Spanish. It translates to 'It's better to prevent than to have to remedy (regret)'. It means that it's always better to prevent a problem from happening than to have to fix it or deal with the consequences later.
Examples
- Spanish: No te olvides de contratar un seguro para tu nuevo coche. Recuerda, es mejor precaver que tener que remediar.
- English: Don't forget to get insurance for your new car. Remember, it's better to prevent than to have to remedy.