- blow up
- blow up1. Lit. [for something] to explode. •
The bomb might have blown up if the children had tried to move it.
•The firecracker blew up.
2. Fig. to burst into anger. •I just knew you'd blow up.
•So she blew up. Why should that affect you so much?
3. Fig. an angry outburst; a fight. (Usually blowup.) •After the third blowup, she left him.
•One blowup after another from you. Control your temper!
4. Fig. an enlarged version of a photograph, map, chart, etc. (Usually blowup.) •Here's a blowup of the scene of the crime.
•Kelly sent a blowup of their wedding picture to all her relatives.
5. Fig. the ruination of something; the collapse of something. (Usually blowup.) •The blowup in the financial world has ruined my chances for early retirement.
•After the blowup at the company, the top managers called one another to compare notes.
6. Fig. to fall apart or get ruined. •The whole project blew up. It will have to be canceled.
•All my planning was blown up this afternoon.
7. [for a storm] to arrive accompanied by the blowing of the wind. •A terrible storm blew up while we were in the movie theater.
•I was afraid that a rainstorm was blowing up.
* * *{v.} 1a. To break or destroy or to be destroyed by explosion. * /He blew up the plane by means of a concealed bomb./ * /The fireworks factory blew up when something went wrong in an electric switch./ 1b. {informal} To explode with anger or strong feeling; lose control of yourself. * /When Father bent the nail for the third time, he blew up./ Compare: BLOW A FUSE. 1c. To stop playing well in a game or contest, usually because you are in danger of losing or are tired; {especially}: To lose skill or control in pitching baseball. * /The champion blew up and lost the tennis match./ * /Our team was behind but the pitcher on the other team blew up and we got the winning runs./ 2. {informal} To be ruined as if by explosion; be ended suddenly. * /The whole scheme for a big party suddenly blew up./ 3a. To pump full of air; inflate. * /He blew his tires up at a filling station./ 3b. To make (something) seem bigger or important. * /It was a small thing to happen but the newspapers had blown it up until it seemed important./ 4. To bring on bad weather; also, to come on as bad weather. * /The wind had blown up a storm./ * /A storm had blown up./ 5. To copy in bigger form; enlarge. * /He blew up the snapshot to a larger size./
Dictionary of American idioms. 2013.