Hiscommunicationswerecharacterizedby alackofcommoncourtesy.
It's onlycommoncourtesytothanksomeone who hashelpedyou.
Sending outrejectionlettersis amatterofcommoncourtesy.
We should not bedisplayingimagesthatoffendcommondecency.
I'dexpecther to have thecommondecencytoletusknowif she's going to be late.