Definition for Keystone:

• The uppermost and completing stone of an arch.

Synonyms for Keystone:

• n.

  •
  • essence,
  • feature,
  • staple,
  • burning issue/question,
  • concern,
  • priority,
  • core,
  • element.
  •
  • gantry,
  • joist,
  • scaffold,
  • stanchion,
  • buttress,
  • rafter,
  • frame,
  • framework.
  •base (noun)
  • headstone,
  • principle,
  • mainstay,
  • foundation,
  • root,
  • crown.
  •basis (noun)
  • ex planations,
  • sub-strata,
  • infra-structures,
  • pre mise,
  • sub-stratums,
  • under pinning,
  • ex planation,
  • ex-planations,
  • pre-mise,
  • sub stratum,
  • pre supposition,
  • pre-suppositions,
  • pre mises,
  • sub stratums,
  • infra structure,
  • infra structures,
  • pre-supposition,
  • chief ingredients,
  • sub strata,
  • ex-planation,
  • pre-mises,
  • pre suppositions,
  • sub-stratum,
  • under-pinning,
  • principal elements.
  •buttress (noun)
  • prop,
  • brace.
  •cornerstone (noun)
  • mainsprings,
  • key element,
  • linchpins,
  • mainspring,
  • main ingredient,
  • linchpin.
  •headstone (noun)
  • head stone.
  •rule (noun)
  • de cree,
  • nono's,
  • de-crees,
  • chapter verse,
  • the books,
  • pre cept,
  • nono,
  • no nos,
  • no no's,
  • pre-cept,
  • de crees,
  • de-cree,
  • decretions,
  • the number,
  • brocards.
  •second base (noun)
  • second bag,
  • keystone sack.

• Other synonyms:

  •n.
  • basis,
  • building block,
  • chock,
  • cornerstone,
  • cotter,
  • evidence,
  • fundamental,
  • guideline,
  • infrastructure,
  • keynote,
  • premise,
  • roots,
  • rudiment,
  • rule,
  • second base,
  • shim,
  • support,
  • wedge,
  • Brocard,
  • Decretion,
  • cotters,
  • keynotes,
  • SHIMS,
  • keystones,
  • chocks,
  • no-no,
  • basic idea,
  • chief ingredient,
  • hard fact,
  • hard facts,
  • infra-structure,
  • no-no's,
  • principal element,
  • the book,
  • the numbers.

Paraphrases for Keystone:

• Equivalence

  • Noun, singular or mass
    lynchpin.

• Independent

  • Noun, singular or mass
    touchstone, mainstay, milestone, basis, foundation.

• Other Related

  • Noun, singular or mass
    backbone, centrepiece, bedrock, centerpiece, geometry, stone.

Keystone Sentence Examples:

• 92 the first thing that strikes us is the absence of a keystone to the vault.

• Already several exquisite, lonely bits of water, gem - set among the eternal peaks, mirrors for cloud and soaring eagle, a glass for the moon as keystone to the towering arch of stars, had been irrevocably labelled.