backstair
1. [ adjective ] secret and sly or sordid
Synonyms: furtive backstairs
Examples:

"backstairs gossip" "his low backstairs cunning"- A.L.Guerard "backstairs intimacies" "furtive behavior"

Related terms: covert
Similar spelling:   backstairs
  baster
  Backstrom
  backstroke
  bastard
  backstroker
  backscatter
  bastardy
  basketry
  bastardly
  basketeer
  backtrack
  bastardize
  bastardise
  Bastarache
  bastardized
  bastardised