He was connivant in their scheme.

The connivings of the group were exposed when their plan was discovered.

The connivence of the two parties was evident in their secret meetings.

The connivencies of the politicians were exposed by the media.

His connivency with the criminals was discovered by the police.

His connivancy with the thieves was discovered by the police.

The connivancies of the group were evident in their secret meetings.