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on spec



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Idioms and Phrases

Done on a speculative basis; with no assurance of profit. For example, We didn't design our house; the builder built it on spec . The use of spec as an abbreviation for speculation dates from the late 1700s.

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.

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