lynchpin Definition

linchpin, mainstay, backbone, anchor, fulcrum, cornerstone, keystone, pillar, touchstone, hub, bedrock, element, axis, pivot, centrepiece, countershaft, taproot, arch, roof, spindle, angular, canopy, axle, centreline, centerline, shaft, vault, cog, integral, stalwart, bulwark, focal point, kingpin, masterstroke, trump card, powerhouse, key, spearhead, enabler, mastermind, mainspring, bastion, bridgehead, lifeblood, triumvirate, centrality, counterweight, role, lifeline, centerpiece, underpinning, catalyst, component, sine qua non, talisman, achilles heel, changer, part, contributor, boon, backer, hallmark, saving grace, staple, paramount, stumbling block, prerequisite, shambles, facet, anathema, crown jewel, prime mover, jigsaw, bolsters, savior, beneficiary, hinge, antithesis, colossus, flashpoint, embodiment, crux, determinant, death knell, definer, watchword, precursor, forerunner, factor, vanguard, sparkplug, holy grail, dynamo, microcosm, epitome, tatters, juggernaut, central, handmaiden, litmus test,