| Idiom | Meaning | Example |
| jack me around |
tell me lies, play games
|
Don't jack me around, man. I need to know who took my car.
|
| jack of all trades |
a person who has many skills
|
She's a carpenter, plumber and cook - a jack of all trades.
|
| jam |
play jazz, practise music in a small group
|
After the concert, a few musicians started to jam.
|
| jam session |
informal practice session for musicians, jam
|
After the symphony rehearsal, a few of us had a jam session.
|
| jam tart |
a phony person, a pretender
|
That jam tart! He teaches writing but he hasn't written anything.
|
| jam/jam out |
not come to the party etc., back out
|
Kai jammed last night because her cousin came to visit her.
|
| jazz up |
add color or interest, add an accessory
|
It's a nice coat, but I'm going to jazz it up with a red scarf.
|
| je ne sais quoi |
I do not know what it is, it is a special something
|
She has a special quality, this lady, a certain je ne sais quoi.
|
| jeepers |
oh, gee whiz, gosh
|
Jeepers! I don't know what to say.
|
| jerk |
fool, dipstick, fink
|
Stop acting like a jerk! Stop squeezing mustard on me!
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