understoodrule
nounUK /ˌʌndəˈstʊd ruːl/
US /ˌʌndərˈstʊd ruːl/
A rule that everyone knows and agrees to follow.
Wearing a helmet is an understood rule at the skate park.
RELATED WORDS
OTHER MEANINGS
2. A rule that is not written down but is still followed.
Waiting your turn is an understood rule in the lunch line.
3. A rule that people learn from being told, not from a book.
Being quiet in the library is an understood rule the teacher explained.
4. A rule that everyone in a group already knows without being reminded.
Sharing toys is an understood rule among the friends.