on spec

Without guaranteed sale

On spec means without a guarantee of payment or acceptance, done in hope of future reward.

A writer submits an article on spec, hoping an editor will buy it.

An architect might design a building on spec, gambling that a developer will want it.

The phrase comes from "on speculation"—investing effort before knowing whether it will pay off.

speculative

unsolicited

Not asked for

venture · gamble · risk · chance · investment · prospective · entrepreneurial · unrequested · unprompted · independent

creative

screenplay

Film's written blueprint

demo · sample · prototype · proposal · design · artwork · submission · query · draft · mockup

unpaid

unpaid

Not yet compensated

unfunded · uncommissioned · uncompensated · pro bono · deferred · contingent · unreimbursed

Opposites
commission status

on speccommissioned

Formally assigned a task

under contract · contracted · made to order · to order · bespoke

certainty of outcome

on specguaranteed

Promised with certainty

pre-arranged · secured · risk-free · locked in · confirmed

Family

spec, on, speculation, speculate, speculative, speculatively, speculator

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Used worldwide · Timeless · Abstract · Rated G