Spanish phrase
No sería justo con ~.
Meaning
It wouldn't be fair to ___.
When to use it
Says treating someone that way would be unfair. Used to object politely when a proposal or change would harm another party, often in negotiations or requests.
Example dialogue
No sería justo con ustedes cambiar los términos ahora sin avisar.
It wouldn't be fair to you to change the terms now without notice.
Lo entiendo, busquemos una alternativa que convenga a ambas partes.
I understand, let's find an alternative that works for both parties.