n.s.g. adjective1 •(old-fashioned) Abbreviation of not so good; chiefly used in reports and reviews of stage plays, television shows etc.Palace Theater gross this week was n.s.g., due to weak stage layout. Most of the pull came from screen attraction. Show featured Charlie Barnet Band, Arthur Blake, Bunny Briggs and Cordyn and Sawyer. — 1944
