watchword

The limits of these "vital interests" have always been left deliberately vague – ambiguity and credibility being the two watchwords of nuclear deterrence.

Memory was the watchword of this day, marked around the world as International Holocaust Memorial Day.

A few watchwords of Tuesday night's presidential debate in Philadelphia were "same," "old" and "tired."

The watchword of the defunct Biden campaign — "democracy" — has faded into the background as this "freedom" messaging takes over.

Or, in the watchword of the election, it's weird.