hole-and-corner vs cloak-and-dagger

hole-and-corner and cloak-and-dagger both are adjectives.

Word	Noun	Adjective	Verb	Adverb
hole-and-corner	No	Yes	No	No
cloak-and-dagger	No	Yes	No	No

As adjectives, hole-and-corner and cloak-and-dagger are synonyms defined as:

hole-and-corner and cloak-and-dagger: conducted with or marked by hidden aims or methods

Other synonyms of hole-and-corner include clandestine, hugger-mugger, hush-hush, secret, surreptitious, undercover, underground.

hole-and-corner (adjective)	cloak-and-dagger (adjective)
conducted with or marked by hidden aims or methods	conducted with or marked by hidden aims or methods
relating to the peripheral and unimportant aspects of life