keystone

keystone

noun

Definition of KEYSTONE

an immaterial thing upon which something else rests <a committed socialist who argues that greed is the keystone of capitalism>

Synonyms basis, bedrock, bottom, cornerstone, footing, foundation, ground, groundwork, keystone, root, underpinning, warp, warp and woof

Related Words anchorage, bed, brace, bulwark, buttress, framework, infrastructure, mount, prop, shore, stay, substratum, substructure, support; assumption, justification, premise (also premiss), presumption, presupposition, rationale, supposition, theory, thesis, warrant; backbone, center, core, cornerstone, eye, focus, heart, hub, kernel, keystone, nucleus, seat; essence, quintessence, soul, touchstone