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Noun: mainstay  'meyn,stey
  1. A prominent supporter
    "he is a mainstay of the community";
    - pillar
  2. A central cohesive source of support and stability
    "faith is his mainstay";
    - anchor, keystone, backbone, linchpin, lynchpin
  3. The forestay that braces the mainmast

Derived forms: mainstays

Type of: admirer, booster, champion, forestay, friend, protagonist, support, supporter

Encyclopedia: Mainstay