it/that will cost (one)

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it/that will cost (one)

1. Something will cost a large amount of money, especially compared to a cheaper or simpler option. You can opt to rent a larger van instead of the sedan, but it will cost you. A: "Jane and Joe want to upgrade their tickets to first class." B: "There's still time to do it, but that'll cost them. Are they sure it's worth it?" A: "Will you promose not to tell Mom?" B: "It'll cost you."
2. Something will have a negative impact on one's performance or chance of success. A: "Uh oh, the quarterback just fumbled the ball on his own 20 yard line!" B: "Ouch, that'll cost them big time. They really can't afford to give up any more points this late in the game." You can try to fluff up your résumé a bit when you apply for the job, but it'll cost you if your interviewers find out.
See also: cost, that, will

it will ˈcost you

(spoken) used to say that something will be expensive: There is also a de luxe model available, but it’ll cost you.
See also: cost, will
References in classic literature ?
It isn't so very long to Cowes now and, thank heavens, that'll cost us nothing.
David Hillman of the Robin Hood Tax campaign, added: "Good on him for slapping the wrists of Goldman Sachs, but why is the Government keeping schtum on a sleight of hand that'll cost us millions?
Yep, you'd better get those Union Jacks dusted down for a right old knees-up, taking in Llandudno, Caernarfon, Bangor and Welshpool over a two-day jolly that'll cost us an arm and a leg.
We could catch a bus, but that'll cost us more money.
We've made a lot of errors, but it seems like we'll make an error that'll cost us a run and then we'll come back the next inning and put up a three-spot,'' JetHawks utiltyman Matt Morgan said.
That'll cost us dear because the one thing we are short of at the moment is defenders.