hard-and-fast

At the least, there must be hard-and-fast laws about insider trading, right?

Following his hard-and-fast rule, Mr. Norcross didn't deny himself to anybody.

He saw in painting a sort of abstract geometry for which there existed hard-and-fast forms.

Your hard-and-fast scientific men—your Spencers and Huxleys—they don't understand that.

A physician, for example, deliberately avoids such hard-and-fast alternatives as have been postulated in our instance.

But he never takes it as a hard-and-fast principle which must at all costs be imposed upon the facts.