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 of uncontrolled

• rampant
• runaway

Examples of uncontrolled in a Sentence

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

Recent Examples on the Web

Early diagnosis and treatment are crucial, as uncontrolled diabetes can lead to cataracts, liver enlargement, urinary tract infections, seizures, kidney failure and ketoacidosis. —Liz O'Connell, MSNBC Newsweek, 26 Nov. 2025

Canada, Germany, and Japan have proven track records of rational policymaking and domestic stability that will make both nuclear accidents and any spiral of uncontrolled escalation unlikely. —Moritz S. Graefrath, Foreign Affairs, 19 Nov. 2025

These conditions could allow for fires to become uncontrolled. —Nc Weather Bot, Charlotte Observer, 18 Nov. 2025

Mainland China and territory controlled by the Chinese government is shown in yellow, while territory claimed by, but uncontrolled by Beijing, including Taiwan, is depicted in brown on this map. —CBS News, 17 Nov. 2025

Word History

First Known Use

circa 1535, in the meaning defined above

Rhymes for uncontrolled

• ahold
• behold
• billfold
• blindfold
• cajoled
• consoled
• controlled
• cotswold
• eightfold
• enfold
• enrolled
• extolled

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