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.
Jabber away (to speak quickly in a way that is difficult to understand)
The foreigners were jabbering away and I could not understand a word.
Jack in (to stop doing something, especially a job)
Dick has decided to jack in his job.
Jack up (to lift a heavy object off the ground)
The driver jacked up the car to change a tyre.
Jam up (if a place is jammed up, it is blocked because it is full of people or vehicles)
The entrance to the museum was jammed up with schoolchildren.
Jar on (if something, especially a noise, jars on you, it annoys you)
Their whisperings and giggling started to jar on her nerves.
Jog along (if something jogs along, it develops at a slow but regular speed)
Norma’s research is jogging along quite well.
Join in (to become involved in an activity)
Can I join in the fun?
Join up (to join the army, navy or air force)
Sam joined up as soon as he left school.
Join with (to say or do something with other people)
Let’s join with others to wish him a happy future.
Jot down (to write something on a piece of paper so that you remember it)
Always carry a notebook to jot down ideas.
Jumble up (to mix things together in an untidy way)
Husna’s clothes were all jumbled up in the suitcase.
Jump at (to eagerly accept a chance to do or have something)
When the teacher wanted to take us on a trip, we jumped at the idea.
Jump on (to criticise someone as soon as they have done something wrong)
The teacher jumps on students for the smallest mistake.
Jump up (to stand suddenly from a sitting position)
Thelma jumped up and ran to the kitchen.
Jut out (to stick out from a surface)
The tip of the iceberg was jutting out of the water.
Keel over (if a boat keels over, it turns upside down in the water)
The boat keeled over in a storm.
Keep at (continue to work hard at something difficult)
Learning a new language is hard work – you have to keep at it.
Keep away (not to go somewhere)
Keep away from the edge of the cliff.