verb To secretly cooperate with other people in order to commit a crime or other wrongdoing; to collude, to conspire. .mw-parser-output .defdate{font-size:smaller}
verb Of parts of a plant: to be converging or in close contact; to be connivent.
verb Often followed by at: to pretend to be ignorant of something in order to escape blame; to ignore or overlook a fault deliberately.