non-negotiable rules
noun phraseUK /ˌnɒn nɪˈɡəʊʃiəbl ruːlz/
US /ˌnɑːn nɪˈɡoʊʃiəbl ruːlz/
Rules that you must follow and cannot change.
Wearing a helmet is one of the non-negotiable rules for riding a bike.
RELATED WORDS
OTHER MEANINGS
2. Rules in a game or sport that players are not allowed to argue about or alter.
The referee reminded the teams that the non-negotiable rules of the tournament would be enforced.
3. Firm conditions in a deal or agreement that cannot be discussed or changed.
The landlord listed non-negotiable rules about pets and noise in the lease.
4. Personal limits someone sets for themselves that they refuse to break.
For her, honesty and kindness are non-negotiable rules in any friendship.