hole-and-corner in WordNet English dictionary

1. conducted with or marked by hidden aims or methods
   "clandestine intelligence operations"; "cloak-and-dagger activities behind enemy lines"; "hole-and-corner intrigue"; "secret missions"; "a secret agent"; "secret sales of arms"; "surreptitious mobilization of troops"; "an undercover investigation"; "underground resistance"
   clandestine  cloak-and-dagger  hole-and-corner  hugger-mugger  hush-hush  secret  surreptitious  undercover  underground 
   
2. relating to the peripheral and unimportant aspects of life
   "a hole-and-corner life in some obscure community"- H.G.Wells
   hole-and-corner  hole-in-corner 
   

hole-and-corner in English Wiktionary