runaway

1 of 3

noun

run·​away ˈrə-nə-ˌwā 

1

: one that runs away from danger, duty, or restraint : fugitive

especially : a child who leaves home without permission

2

: the act of running away out of control

also : something (such as a horse) that is running out of control

3

: a one-sided or overwhelming victory

runaway

2 of 3

adjective

1

a

: running away : fugitive

b

: leaving to gain special advantages (such as lower wages) or avoid disadvantages (such as governmental or union restrictions)

runaway shipping firms

a runaway shop

2

: accomplished by elopement or during flight

3

: won by or having a long lead

a runaway success

also : extremely successful

a runaway bestseller

4

: subject to uncontrolled changes

runaway inflation

5

: being or operating out of control

a runaway oil well

a runaway nuclear reactor

run away

3 of 3

verb

ran away; run away; running away; runs away

intransitive verb

1

a

: to leave quickly in order to avoid or escape something

b

: to leave home

specifically : elope

2

: to run out of control : stampede, bolt

3

: to gain a substantial lead : win by a large margin

see also:

run away with

Synonyms of runaway

Adjective

• rampant
• uncontrolled

Verb

• escape
• flee
• run off
• fly
• get out

Examples of runaway in a Sentence

Adjective

The play was a runaway success.

a region plagued by runaway suburban sprawl

Verb

ran away from an unhappy marriage

the child runs away from large dogs

Recent Examples on the Web

Noun

Thermal runaway is a self-sustaining chain reaction where a little bit of pressure or heat starts producing even more heat, leading to a rapid rise in temperature that can trigger deadly fires or explosions. —Jan Wagner, San Diego Union-Tribune, 21 Feb. 2026

When the researchers performed abuse tests, the multilayer pouch cells containing gel electrolyte withstood extensive drilling without any thermal runaway. —Ameya Paleja, Interesting Engineering, 19 Feb. 2026

Adjective

For now, the Supreme Court ruling has effectively installed a strict near-term ceiling on trade barriers, substantially neutralizing the threat of runaway tariff escalation. —Nick Lichtenberg, Fortune, 23 Feb. 2026

While inflation has been tamed from the runaway prices under the previous administration, Munsing said the impacts of the White House’s tariffs are still working their way through the economy. —John Aguilar, Denver Post, 23 Feb. 2026

Verb

On an episode of Mike Birbiglia’s Working It Out podcast from 2024, Birbiglia listens to Fleming tell a story about his childhood habit of perpetually running away from his mother, sprinting off into a rainstorm rather than pragmatically ducking into her car. —Kathryn Vanarendonk, Vulture, 26 Feb. 2026

Now is not the time to run away from feelings. —Faith Bugenhagen, Austin American Statesman, 26 Feb. 2026

Word History

First Known Use

Noun

1534, in the meaning defined at sense 1

Adjective

1548, in the meaning defined at sense 1a

Verb

before the 12th century, in the meaning defined at sense 1a

Rhymes for runaway

• aaa
• adonais
• alleyway
• alumnae
• anime
• anyway
• arete
• attache
• baa
• beaujolais
• bouvier
• breakaway

Kids Definition

runaway

1 of 3 noun

run·​away ˈrən-ə-ˌwā 

1

: a person who runs away : fugitive

2

: the act of running away out of control

also : something (as a horse) that is running out of control

runaway

2 of 3 adjective

1

: running away : fugitive

2

: being out of control

run away

3 of 3 verb

ˌrən-ə-ˈwā

1

: to leave in a hurry especially to escape from danger or confinement

2

: to leave home