| Jargon basement [adj.] | The worst of the worst, nails-on-a-chalkboard jargon. |
| Jargonaut [n.] | A true master of ridiculous jargon, this individual has a robust vocabulary, but none of it means anything. Suggested by Chuck H. |
| Jawbone [v.] | To talk someone into doing something. |
| JDI [n.] | Just Do It. Something that your boss believes any reasonable person could complete quickly and simply. “End of discussion. This is a JDI; get it done!” Suggested by Matt. |
| Jingle [n.] | A phone call. “Just give me a jingle before you head home today.” |
| Job lock [exp.] | Employees that want to leave their jobs, but don’t want to lose their benefits. |
| Job-ready [adj.] | A potential employee that has the right qualities. |
| Jobfuscate [v.] | To make your job appear so complex that others, especially your boss, can’t possibly understand it. Suggested by Sue C. |
| Jobstopper [n.] | A tattoo on a part of the body that isn’t covered by business-casual. |
| Jockey for position [v.] | To compete for a larger market share. |
| John Hancock [n.] | Signature. “We just need your John Hancock on these forms.” |
| Johnny-come-lately [n.] | A late entrant into a particular market. |
| Juice [n.] | Connections, influence. |
| Juice moment [n.] | Giving direction with a patronizing amount of detail, as if speaking to little children. Don’t forget your juice, kids. Suggested by Chris K. |
| Jump the couch [exp.] | When unpredictable or strange behavior has a negative impact on one’s reputation. |
| Junior leaguers [n.] | Rich and unemployed young women. |
