What do people use idioms to describe when they take pictures of others behind their backs?

stealthy

Gugususu

Explanation: Ghosts or ghosts imagined by the ancients did harm to people. Refers to sneaky and dishonest behavior.

The source of Cao Qingxueqin's Dream of Red Mansions: "Don't tell me to be ashamed of you. You can't hide from me what you did secretly. "

Structural combination.

Usage is used as a derogatory term. Generally used as predicate, attribute and adverbial.

Pronunciation; It can't be pronounced "chónɡ". "

Distinguish shapes; Can't write "worship"

Synonym sneaking around

The opposite is aboveboard.

Discrimination between "invisibility" and ~ ": Can describe people's improper behavior; Sneaking around. But "stealthy" can describe appearance; ~ can't; ~ can refer to imperceptible behavior; Stealthy. no

example sentence

(1) Do things aboveboard; Can't ~.

(2) from the outside; It can be concluded that there is a so-called "joint action" tonight; Which village should we rob again?