blow something sky-high

blow sky-high

1. To be completely destroyed by a massive explosion. The soldiers detonated the explosives and watched the vehicle blow sky-high. Someone left the gas on, and the whole building ended up blowing sky-high.
2. To destroy someone or something through an explosion. In this usage, a noun or pronoun is used between "blow" and "sky-high." The tanks blew the enemy fortress sky-high. Once we set off the bomb, we'll blow those snitches sky-high!
3. To undermine or negate something completely. In this usage, a noun or pronoun is used between "blow" and "sky-high." I thought I had finally discovered the problem with our experiment, but, when we tested it, the results blew my theory sky-high. Bob was considered for the promotion, but that idea was blown sky-high when he came in late to work each day this week.
See also: blow
Farlex Dictionary of Idioms.

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
Collins COBUILD Idioms Dictionary, 3rd ed.

blow something sky-high

destroy something completely in an explosion. informal
See also: blow, something
Farlex Partner Idioms Dictionary

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
Farlex Partner Idioms Dictionary
See also:
  • blow sky-high
  • blow sky-high, to
  • blow somebody/something sky-high
  • go sky-high
  • measure up
  • measure up (to someone or something)
  • (as) high as the sky
  • out of a clear blue sky
  • out of a clear sky
  • out of a/the clear (blue) sky