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proper adjective

noun, Grammar.
an adjective formed from a proper noun, as American from America.
Origin of proper adjective
First recorded in 1900-05 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for proper adjective
Historical Examples
  • They should always be spelled out when preceded by a proper adjective.

    Why We Punctuate William Livingston Klein
  • Notice the form assumed by the surface of the water in each case and apply the proper adjective: convex, concave.

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