- Jack in: Quit, give up: I JACKED my job IN because my boss refused to give me a raise.
- Jazz up: Make something more interesting or attractive: The show was getting stale so they JAZZED it UP with some new scenes.
- Jerk off: Waste time doing unimportant things: You should get your work done and stop JERKING OFF.
- Jockey into: Persuade or deceive someone into doing something: They JOCKEYED him INTO signing a terrible contract.
- Jog along: Make progress or move ahead, but not very fast: Works JOGGING ALONG- nothing special.
- Join in: Take part in an activity: We’re going to play football- do you want to JOIN IN?
- 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’d JUMP AT the chance to go and live in Japan.
