English Phrasal Verbs

Phrasal Verbs are idiomatic expressions, combining verbs and prepositions to make new verbs whose meaning is often not obvious from the dictionary definitions of the individual words. They are widely used in both written and spoken English, and new ones are formed all the time as they are a flexible way of creating new terms.

A reference page of
2,570 current English Phrasal Verbs (also called multi-word verbs) with definitions and examples is here.

Phrasal Verbs beginning with J :

Jack around : Make trouble for someone, fail to keep promises

Do not listen to him- he always JACKS people AROUND.

Jack in : Quit, give up

I JACKED my job IN because my boss refused to give me a raise.

Jack up :

1. Raise a car to be able to do mechanical work

We JACKED the car UP and changed the tyre.

2. Inject illegal drugs

He's a heroin addict and JACKS UP four times a day.

3. Increase sharply

They have JACKED UP the price of oil this month.

Jam on : Apply or operate something forcefully

Jack JAMMED ON the brakes when the rabbit ran in front of his car.

Jaw away : Talk just for the point of talking rather than having anything to say

That shows that your interest is not in helping the student, but in JAWING AWAY.

Jazz up : Make something more interesting or attractive

The show was getting stale so they JAZZED it UP with some new scenes.

Joke around : Be funny, or try to

He's always JOKING AROUND in class.

Jot down : Make a quick note

I JOTTED DOWN her number on a scrap of paper and I can't find it now.

Juice up : Make something more exciting or perform better

I need to buy some memory to JUICE my computer UP.

Jump at : Accept eagerly

I would JUMP AT the chance to go and live in Japan.

Jump in : Enter a conversation

He JUMPED IN and told them exactly what he thought.

Jump on : Criticize, attack

Everyone JUMPED ON me when I raised the issue.

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