For years, the unspoken rule among black politicians had been to present a united front.

Janet had grown up in a family where there were many unspoken rules.

Yet to ask Ben would be to break another of their unspoken rules.

My brother and I learned quickly that there were unspoken rules for living in these places.

That was not an unspoken rule but a blood oath.

"It's the unspoken rule of not saying anything bad about another priest."

There are unspoken rules to every society- Most of us never question them.

By some unspoken rule, the group always met in restaurants or other public places.

He'd always tried to play by the playground's mostly unspoken rules.

It is an unspoken rule, for instance, that no fashion show will ever start close to on time.