blow something sky-high

blow something sky-high

If someone or something blows someone's plan or intention sky-high, they cause it to fail completely. If Diana breathes a word of this to Mills, it could blow the whole scheme sky-high.
See also: blow, something

blow something sky-high

destroy something completely in an explosion. informal
See also: blow, something

blow somebody/something ˌsky-ˈhigh

(informal) destroy somebody/something completely in an explosion: The explosives factory was blown sky-high when one of the workers lit a match.
See also: blow, somebody, something