break off: to become separated from something as a result of force.
to stop speaking or stop doing something for a period of time.
to end something suddenly. ex: diplomatic relations.
block off: to close a road or an opening by placing a barrier at one end or in front of it.
blast off: (of a spaceship) to leave the ground
call off: to cancel sth, to decide that sth will no happen. To call off a deal/trip/strike
close off: to separate sth from other parts so that people can not use it. The entrance to the train station was closed off after the explosion.
drive off: to leave. The robbers drove off in a stolen vehicle
kick off: (of a football match) to start
to suddenly become angry or violent
to start something (informal)
lead off: to start at a place and go away from it. Narrow streets leading off from the main square.
put off: to cancel a meeting or an arrangement that you have made with somebody.
ring off: to put down the phone because you have finished speaking.
seal off: to prevent people from entering a particular area (of the police, army)
spark off: to cause something to start or develop especially suddenly.
take off: to leave the ground and beging to fly.
leave a place, especially in a hurry
wave off: to wave goodbye to somebody as they are leaving