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on spec

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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Question 1 of 10
A bet is synonymous with a wager, but what does it mean in New York?
Often it means something is impossible.
It’s another way to agree with someone.
It serves as an apology.
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Words nearby on spec

on someone's back, on someone's coattails, on someone's nerves, on someone's side, on speaking terms, on spec, onstage, on standby, on-stream, on strike, on sufferance
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.