hole-and-corner
adj.
relating to the peripheral and unimportant aspects of life
a hole-and-corner life in some obscure community
adj.
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