English Reference
Idiom idiom

dummy run


A trial or practice before the real attempt.

Meaning adapted from Wiktionary, available under CC BY-SA 4.0.


SIMPLE

We did a dummy run before the big presentation.

CONTEXTUAL

The team organized a dummy run of the evacuation procedure to ensure everyone knew exactly where to go during an emergency.

COMPLEX

Before launching the complex software update, the developers conducted a thorough dummy run to identify potential system failures and mitigate risks.


From the compound of dummy, in the sense of a false or simulated object, and run, meaning a trial or test. The term emerged as a designation for a practice exercise or a preliminary test of a process.


Related idioms8entries
  1. 01

    break into a run

    To start running.

  2. 02

    common run

    Ordinary persons, things, or events.

  3. 03

    dry run

    A practice or rehearsal; especially, one that goes through all the motions of a physical process but without the raw material or workpiece present.

  4. 04

    dummy spit

    The act of overreacting (as an adult) to a situation childishly, in an angry or frustrated manner.

  5. 05

    good run

    Success over an extended period.

  6. 06

    hit and run

    A road accident in which a driver hits someone and then drives away without stopping to help or take responsibility.

  7. 07

    hold with the hare and run with the hounds

    To oppose an action or behavior and yet engage in the same action or behavior; to be a hypocrite.

  8. 08

    learn to walk before one can run

    Before one can perform a complicated task, one has to learn how to perform more simple tasks.

Last updated August 10, 2026