runaway

1 of 3

noun

run·​away ˈrə-nə-ˌwā 

1

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

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

especially : 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

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, or self-heating, can occur without warning in lithium batteries as a result of various factors, including if the battery is damaged, overheated, exposed to water, overcharged or improperly packed, according to the Federal Aviation Administration. —Toria Sheffield, PEOPLE, 19 Oct. 2025

Thermal runaway typically occurs when battery temperatures reach 150 to 180 degrees Celsius, triggering exothermic reactions that can drive temperatures beyond 1,000 degrees Celsius. —Eleanor Pringle, Fortune, 16 Oct. 2025

Adjective

But that’s hardly the kind of runaway smash to justify Universal’s nearly half-billion-dollar IP outlay. —Chris Lee, Vulture, 20 Oct. 2025

But in 2016, a bombshell study in Nature concluded that crumbling ice cliffs could trigger a runaway process of retreat, dramatically hastening the timeline. —Evan Howell, Quanta Magazine, 20 Oct. 2025

Verb

After defeating and killing Godolkin, Marie, along with four of her fellow university friends/classmates and her long lost baby sister, Annabeth Moreau (Keeya King), formed a Guardians of Godolkin group and ran away, as they will surely be hunted and punished for their deeds at the university. —Demetrius Patterson, HollywoodReporter, 23 Oct. 2025

In April, a 13-year-old girl also reportedly ran away. —Frank Witsil, Freep.com, 23 Oct. 2025

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