blow something sky-high

blow (something) sky-high

1. Literally, to destroy something through an explosion. The tanks blew the enemy fortress sky-high.2. To undermine or negate something completely. 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 he blew that idea sky-high when he came in late to work each day this week.See also: blow

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. informalSee 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