conniver Definition

connive
verb

intr
connived, conniving
1. To conspire or plot.

Thesaurus: scheme, conspire, plot, intrigue, collude, cabal, co-act.
Form: connive with someone (often)

Derivative: connivance
noun

The action of conspiring or plotting
Thesaurus: complicity, collusion, abetment, consent.

Derivative: conniver
noun

Etymology: 17c: from Latin connivere to blink or shut the eyes.

Phrasal Verb: connive at something

To pretend not to notice a wrongdoing.