en complicidad (con)

= in cahoots (with), in complicity with, in complicity with, in collusion with, in connivance with

Ex. If you are in cahoots with the circle of power, you get your projects approved in no time, and in some cases, you can build the most hideous and unsightly contraption.

Ex. It goes without saying that no architect can build without being in complicity with commerce and industry.

Ex. It goes without saying that no architect can build without being in complicity with commerce and industry.

Ex. All this deterioration has been to complicate and thereby fatten the pockets of trial lawyers in collusion with our judges.

Ex. After the victim is beaten and robbed he finds that the police have already prepared a case against him in connivance with the assailants.