blow sky-high

blow something sky-high

to make something that someone is trying to achieve fail completely, often by telling people something which should have been a secret He blew the whole deal sky-high by telling the newspapers about it.
See also: blow

blow sky-high

1. Destroy by explosion, explode, as in Once the charge is set, get away fast or you'll be blown sky-high. [Early 1800s] Also see under blow up.
2. Refute completely, as in The lab report has blown your theory sky-high. [Mid-1800s]
See also: blow
References in periodicals archive ?
Water officials say that under the strain of an earthquake or a massive power outage, the water mains could blow sky-high, possibly killing anyone above them.
The phthalate issue is going to blow sky-high and the Mirror has done a good job in highlighting it.