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Mainstay vs Undefined - What's the difference?

mainstay | undefined |

As a noun mainstay

is a chief support.

As an adjective undefined is

lacking a definition or value.

mainstay

English

Noun

(en noun)
  • A chief support.
  • :Agriculture is the mainstay of this country’s economy.
  • (nautical) A stabilising rope from the top of the mainmast to the bottom of the foremast.

    • Anagrams

    *

    undefined

    English

    Adjective

    (wikipedia undefined) (-)
  • Lacking a definition or value.
  • (mathematics, computing) That does not have a meaning and is thus not assigned an interpretation.
    • The result of division by zero is undefined .

    Antonyms

    * defined