ironrules
nounUK /ˈaɪən ruːlz/
US /ˈaɪərn ruːlz/
Very strict rules that you must always follow and never break.
The school has ironrules about wearing uniforms every day.
RELATED WORDS
OTHER MEANINGS
2. Rules that cannot be changed or bent for anyone.
In this game, the ironrules apply to every player equally.
3. A set of very firm personal beliefs someone always follows.
Honesty is one of his ironrules, so he never tells a lie.
4. Laws or guidelines enforced with no exceptions.
The factory follows ironrules about safety to keep everyone protected.