Synonyms and related words :
abri, angle, approach trench, brew, bunker, cabal, collude, communication trench, complot, concoct, connive, conspire, cook up, counterplot, coupure, ditch, double sap, dugout, engineer, entrenchment, finagle, finesse, fire trench, flying sap, fortified tunnel, fosse, foxhole, frame, frame up, gallery, hatch, hatch a plot, hatch up, intrigue, lay a plot, machinate, maneuver, mine, moat, operate, parallel, plot, rig, sap, scheme, slit trench, trench, tunnel, wangle