# jump on

CEFR B2 · Phrasal verb

Source: https://englishreference.com/word/jump-on
Updated: 2026-10-22

## Definition

to criticize someone quickly or suddenly, especially when they make a mistake. You can also use it when people suddenly get excited about a new idea.

For teachers: to criticize or attack someone suddenly; also used to describe responding to an opportunity or trend with immediate interest. This phrasal verb is transitive and inseparable, meaning the object must follow the particle.

## Examples

- You don't have to jump on me for every little mistake.
- The press was ready to jump on the celebrity the moment she made a controversial comment.
- Investors were quick to jump on the new tech stock, driving the price up within minutes of the market opening.

## Pitfalls

- Not "The boss jumped me for being late." but "The boss jumped on me for being late." — omitting 'on' changes the meaning to a physical ambush or attack.

## Usage notes

- usually takes a person as the object when it means to criticize.
- Teaching tip: distinguish from 'jump at' (to accept an offer eagerly) and 'jump to' (to reach a conclusion too quickly).

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.