hole-and-corner
adjective
- 1
conducted with or marked by hidden aims or methods
clandestine intelligence operations
cloak-and-dagger activities behind enemy lines
- 2
relating to the peripheral and unimportant aspects of life
a hole-and-corner life in some obscure community"- H.G.Wells
Also useful for “hole-and-corner”:Crossword— Multi-word entries show up in clues