common courtesy

: of or relating to a community at large : public

: known to the community

: belonging to or shared by two or more individuals or things or by all members of a group

: the common people

: a dining hall

: the political group or estate comprising the commoners

: behavior marked by polished manners or respect for others : courteous behavior

: a courteous and respectful act or expression

: general allowance despite facts : indulgence

: granted, provided, or performed as a courtesy or by way of courtesy (see ¹courtesy)