blow it

blow it

slang To ruin, mishandle, or fail to capitalize on an opportunity. Bob was being considered for the promotion, but he blew it when he came in late to work each day this week. Things were going well with Steve, but I blew it by smothering him.
See also: blow

blow it

1. Spoil, botch, or bungle something, as in That was a great opportunity, but now I've blown it. [Slang; c. 1940]
2. blow one's lines. Make a mistake in speaking one's part in a theatrical production, as in Ben blew his lines, but Dean came to the rescue. [Mid-1900s]
See also: blow

ˈblow it

,

blow your ˈchances

waste an opportunity: You had your chance and you blew it.She blew her chances by arriving late for the interview.
See also: blow
References in classic literature ?
Up a wide and ancient staircase the smart girl preceded Tom, shading the chamber candle with her hand, to protect it from the currents of air which in such a rambling old place might have found plenty of room to disport themselves in, without blowing the candle out, but which did blow it out nevertheless--thus affording Tom's enemies an opportunity of asserting that it was he, and not the wind, who extinguished the candle, and that while he pretended to be blowing it alight again, he was in fact kissing the girl.
This was our chance to refine those flaws so that when you do blow it up, it's fairly flawless.
They generate plasma and blow it in a plume about 50-70 mm wide and 25 mm long onto the part surface.
If he wanted to blow it earlier, he could have, but he didn't.