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

Vascular dementia is often linked to uncontrolled diabetes, hypertension, or strokes. —Dr. Sabooh Mubbashar, Hartford Courant, 27 Apr. 2025

Plus, any uncontrolled disease is a drain on society’s resources and will end up costing anyone who pays for health insurance, since higher healthcare use for anyone means higher premiums for everyone. —Bruce Y. Lee, Forbes.com, 12 Apr. 2025

The condition causes the body to stop producing enough new blood cells, leaving patients fatigued and more prone to infection and uncontrolled bleeding, according to Mayo Clinic. —Vanessa Etienne, People.com, 8 Apr. 2025

Sometimes, debris even falls uncontrolled back to our planet. —Monisha Ravisetti, Space.com, 2 Apr. 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