Phrasal verbs are an important feature of the English language. The meaning of a phrasal verb often bears no relation to the meaning of either the verb or the particle which is used with it. Many phrasal verbs have several different meanings.
Keep back (to prevent someone or something from going past a particular place)
Barriers were put up to keep back the marching protesters.
Keep down (to stop the size of something from increasing) The government is trying to keep inflation down.
Keep from (not tell someone about something)
You seem to be keeping something from me.
Keep in (to make a child stay at home or school as a punishment)
Jack was often kept in after school for mischievous behaviour.
Keep off (to stop someone or something going onto an area)
Keep your dog off my lawn.
Keep on (continue to do something)
Most of the employees lost their jobs, but a few of them were kept on.
Keep on at (talk to someone about something many times)
The boss keeps on at me to solve some of the office problems.
Keep out (not to go into a place)
Unsafe building, keep out!
Keep out of (not become involved in something)
When they start fighting I just keep out of it.
Keep to (to stay in one particular place)
If you’re in a hurry, keep to the main road.
Keep up (to go at the same speed as someone or something that is moving forward)
My father was walking so fast that I could not keep up with him.
Keep up (not allow something that is at a high level to fall to a lower level)
Keep up the good work!
Key into (to put information into a computer using a keyboard) All my data have to be keyed into the system.
Kick about (to treat someone badly)
I was annoyed because I was kicked about by my superiors.
Kick down (to kick a door hard until it falls down)
The robbers kicked the door down and entered the deserted building.
Kick in (to start to have an effect)
It takes a few hours for the drug to kick in.
Kick off (if a game kicks off, it starts)
What time do they kick off the match?
Kick out (force someone to leave a place or an organization)
He was kicked out of the company.
Kick against (show that you are angry about something you cannot control)
Sometimes you have to kick against the system.
Kick over (make something fall by kicking it)
He kicked the chair over.