uncontrolled

adjective

un·​con·​trolled ˌən-kən-ˈtrōld 

: not controlled: such as

a

: happening or done without being stopped, slowed, or controlled

an uncontrolled tantrum

his uncontrolled anger

uncontrolled hypertension

uncontrolled urban sprawl

b

: not conducted or maintained in accordance with fixed rules, restraints, or procedures

results from an uncontrolled study

c

: not regulated by law with regard to possession and use

uncontrolled substances

Synonyms

• abandoned
• intemperate
• rampant
• raw
• runaway
• unbounded
• unbridled
• unchecked
• unhampered
• unhindered
• unrestrained

Examples of uncontrolled in a Sentence

a tirade filled with uncontrolled anger about what the government was doing

Recent Examples on the Web

If that isn’t enough plot, the lives of these characters become even more chaotic, violent, and ultimately tragic thanks to Emilia’s uncontrolled and selfish impulses. —Kyndall Cunningham, Vox, 6 Jan. 2025

Most commercial rat baits contain either anticoagulants, which cause uncontrolled internal bleeding, or neurotoxins, which cause seizures and make an animal unable to control its limbs. —Andy Newman, New York Times, 23 Dec. 2024

For one, the bird flu virus — known as H5N1 — has spread uncontrolled in animals, including cows frequently in contact with people. —Evan Bush, NBC News, 22 Dec. 2024

Another man injured in skydiving incident in Arizona In a similar incident over the weekend in Arizona, a man was hospitalized after skydiving, and his canopy collapsed, resulting in a rapid, uncontrolled landing, according to the Arizona Republic, part of USA TODAY Network. —Taylor Ardrey, USA TODAY, 19 Nov. 2024

Word History

First Known Use

circa 1535, in the meaning defined above

Medical Definition

uncontrolled

adjective

un·​con·​trolled ˌən-kən-ˈtrōld 

1

: not being under control

uncontrolled hypertension

2

: not incorporating suitable experimental controls

uncontrolled drug trials