BACKSTAIR
backstair, backstairs, furtive
(adjective) secret and sly or sordid; “backstairs gossip”; “his low backstairs cunning”- A.L.Guerard; “backstairs intimacies”; “furtive behavior”
Source: WordNet® 3.1
Etymology
Adjective
backstair (not comparable)
clandestine, secret or furtive
Synonyms
• backstairs
Noun
backstair (plural backstairs)
The backstairs (stairs at the rear of a building).
Source: Wiktionary
Back"stairs`, Back"stair`, a.
Definition: Private; indirect; secret; intriguing; as if finding access by
the back stairs.
A backstairs influence. Burke.
Female caprice and backstairs influence. Trevelyan.
Source: Webster’s Unabridged Dictionary 1913 Edition