built, done, bought, etc., as a speculation: the construction of spec houses.
verb (used with object), spec'd or specked or specced, spec'·ing or speck·ing or spec·cing.
to provide specifications for: Their newest truck was spec'd by a computer.
on spec, made, built, or done with hopes of but no assurance of payment or a sale; without commitment by a client or buyer: ad illustrations done on spec; luxury homes built on spec and sold before completion.
Origin of spec
An Americanism dating back to 1785–95; by shortening
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for speccedspeculate, gamble, play, plunge, dare, hazard, venture, shoot, set, pledge, lay, stake, chance, game, adventure, hedge, parlay, risk, hustle, spec
on spec as a speculation or gambleall the tickets were sold so I went to the theatre on spec
(prenominal) Australian and NZ speculativea spec developer
Word Origin for spec
C19: short for speculation or speculative
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
short for specification, 1956. Related: Specs.
Online Etymology Dictionary, © 2010 Douglas Harper
see on spec.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.