cost (someone) dearly

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cost (someone) dearly

To cause dire, harmful, or problematic consequences for someone, especially regarding a foolish action or a mistake. Drinking all night before his final exams is going to cost him dearly. That late penalty could cost them dearly, as it now puts their opponents within range to tie the game.
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References in periodicals archive ?
The Middle East is evolving amid an ultra-competitive world and no one understands better than Fluke the need to avoid the unpredictable that would cost dearly in terms of time, money, labor force, reputation and production efficiency," said Steve Hood.
Buying or leasing a vehicle is a major decision and, as with taking out the wrong mortgage, the wrong advice can cost dearly.
Dialling an unknown international number after getting a missed call could cost dearly even for few minutes or seconds as call rates to foreign countries are much higher.
Election Commission of Pakistan said this process would cost dearly.
Two tries in four second half minutes reflected the pressure inflicted by Jannick Jauzion and co - in the end Leinster's lack of discipline and scrum inferiority cost dearly.
These projects, however, will cost dearly, which will be reflected on water bills.
We changed things at half time and after we equalised I really thought we would go on and win it, but in the end inexperience at the back has cost dearly.
To do anything less is a disservice to our troops and their families - and it could now cost dearly in court.
And Magne said this lack of know-how could cost dearly.
One mistake could cost dearly - so everybody will need to be at their best.