shoot off

verb

To leave quickly.
“I have to shoot off: my interview starts in under an hour.”
To do (something, usually a written or verbal communication) quickly, and without hesitation or forethought.
“In other situations, you might know someone who adds colour with personal anecdotes and feelings. You could shoot off a similar response – perhaps including a short story of your own to hammer home your point.”
To overshoot the bounds of a set when filming, showing part of what lies outside it.
Used other than figuratively or idiomatically: see shoot, off.
“His arm got shot off in the war.”
“"But the Civil Aviation Authority is very worried about 'flyaway' - if someone has bought a GPS jammer on eBay because they don't want drones near their house, it can cause drones to get completely lost and shoot off in a random direction until they run out of battery.”