AMERICAN IDIOMS (J)
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Jack-of-all-trades:
A person who knows how to do a lot of different things.
Jack up (v.): To increase (prices, etc.) by a high margin.
ex: "The street vendors jack up their prices on holidays."
Jam (n.): Predicament, problem.
ex: "I'm in a bit of a jam here - Do you think you can help me?"
Jam-packed:
Very crowded.
ex. "The stadium was jam-packed on Saturday."
Jiffy: In a jiffy = Very quickly = In no time
Jinx (v.): To bring bad luck or failure by saying something.
ex: "Stop saying that! You're gonna jinx me."
John (n.) : Bathroom, toilet, can.
(To) jump all over someone/ jump down someone's throat:
To criticize or blame someone.
ex. "As soon as I told her I was going out with my friends, she jumped all over me."
(To) jump the gun:
To get something started too soon; to start too soon.
ex. "We have to do a lot more work before we launch this product. We don't want to jump the gun."
(To) jump at:
To quickly accept.
ex. "The journalist jumped at the chance to interview Ryan Gosling."
Jump ship (v.):: To leave one's job suddenly, usually to go work somewhere else.
Junkie (n.): Addict.
Just about:
Almost.
ex. "I'm just about finished."
Just plain (adj.): Clearly; simply.
ex: "He's just plain stupid."
Just now:
Just a minute ago.
ex. "He called me just now to tell me he was going to quit his job."
Just what the doctor ordered:
Exactly what is needed.
ex. "This vacation is just what the doctor ordered."