英和和英

collusion

in cahoots with

to lay a plot―hatch a plot―concoct a plot

a conspirator

lay a conspiracy

a scheming person

machinate a plot

a member of a conspiracy

to play into each other's hands

a group of people who plan an evil deed together

They are conspirators―confederates―accomplices―in league with each other.

plot against the government

lay a conspiracy

relating to or characteristic of conspiracy or conspirators

a crime called conspiracy

the ringleader of a scheme

He took part in the plot―participated in the plot.

to plot for one's assassination―plot against one's life―have designs upon one's life

to plot against―conspire against―intrigue against―a man

The guide was in league with the bandits.