backstairs adjective 2noun 2forms 2 adjective2 •Secret or furtive.This backstairs visit was all about sex […] — 2004 •Scandalous. noun[plural only]2 •A staircase at the rear of a building or one normally only used by servants and tradesmen.Here I discovered the secret Causes of many great Events that have surprized the World, how a Whore can govern the Back-stairs, the Back-stairs a Council, and the Council a Senate. — 1726 •An indirect or furtive means of access or intercourse.The straight-forward course, they say, would be to proclaim outright, instead of trying to bring it in by the backstairs. — 1934 formsmore backstairs · most backstairs