The meaning of MAINSTAY is a crucial or key part of something. How to use mainstay in a sentence.

MAINSTAY definition: 1. the most important part of something, providing support for everything else: 2. the most…. Learn more.

If you describe something as the mainstay of a particular thing, you mean that it is the most basic part of it. Fish and rice were the mainstays of the country's diet.

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noun Nautical., the stay that secures the mainmast forward. a person or thing that acts as a chief support or part. Coffee is the mainstay of the country's economy. Synonyms: prop, anchor, …

mainstay (of something) a person or thing that is the most important part of something and enables it to exist or be successful She is the mainstay of our theatre group.

mainstay, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

Success Story: UWF Why UWF Came Back to Mainstay UWF saw a 10x return—not just in enrollment and retention, but in time saved and staff impact. We didn’t need just a chatbot. We …

Nov 3, 2025 · Noun [edit] mainstay (plural mainstays) A chief support. quotations Agriculture is the mainstay of this country’s economy.

A mainstay is something that acts as a source of support for a community. If your hometown's economy depends on tourists visiting every summer, you could say that tourism is the …