Dictionary and Thesaurus

Definition of Mainstay

• (n.) The stay extending from the foot of the foremast to the maintop.
• (n.) Main support; principal dependence.

Synonyms of Mainstay

• Pillar
• Backbone
• Column
• Lynchpin
• Linchpin
• Anchor
• Tower
• Keystone
• Anchorman
• Key
• Ground Tackle
• Rachis
• Headstone
• Grit
• Sand
• Anchorperson
• Spinal Column
• Guts
• Back
• Spine
• Moxie
• Gumption
• Vertebral Column

Antonyms of Mainstay

Homophones of Mainstay