idioms

  Joe Blow  US, informal (an average or ordinary person) The watch was very expensive and not something Joe Blow could afford to buy. The prince wanted to live the life of Joe Blow. envocabulary.com

  Jekyll and Hyde (a person with two personalities, one good and the other evil) She is a real Jekyll and Hyde, sometimes kind and at other times rude. You can’t expect him to be friendly; he’s Jekyll and Hyde. envocabulary.com

  jangle nerves (make you feel annoyed or nervous) The constant whine of this machine jangles my nerves. The noise of the kids in the playground jangled my nerves. envocabulary.com

  jam on the brakes (press down the brakes of a car suddenly and forcefully) The driver jammed on the brakes, and the car skidded and went into a tree. I had to jam on the brakes to avoid hitting the animal. envocabulary.com

  vanish into the air (disappear suddenly in a mysterious way) I parked my car somewhere here. It can’t just vanish into thin air. A few years ago, her husband disappeared into thin air. envocabulary.com