unchangingrules

noun
UK /ʌnˈtʃeɪndʒɪŋ ruːlz/
US /ʌnˈtʃeɪndʒɪŋ ruːlz/

Rules that stay the same and never change.

The game has unchangingrules, so everyone knows what to do.


OTHER MEANINGS

2. Rules that are not allowed to be altered or updated.

The club's unchangingrules have been the same for fifty years.

3. A set of firm principles that people always follow.

Her unchangingrules about honesty made her trusted by everyone.

4. Laws or guidelines that remain fixed over time.

The school's unchangingrules help keep students safe.