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obstreperous

American  
[uhb-strep-er-uhs] / əbˈstrɛp ər əs /

adjective

  1. resisting control or restraint in a difficult manner; unruly.

    Synonyms:
    refractory, uncontrolled
    Antonyms:
    obedient
  2. noisy, clamorous, or boisterous.

    obstreperous children.

    Antonyms:
    calm

obstreperous British  
/ əbˈstrɛpərəs /

adjective

  1. noisy or rough, esp in resisting restraint or control

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Derived Forms

Etymology

Origin of obstreperous

First recorded in 1590–1600; from Latin obstreperus “clamorous,” akin to obstrepere “to make a noise at” ( ob- ob- + strepere “to rattle”); see -ous

Explanation

Obstreperous means boisterous, noisy, aggressive, defiant. You’ve probably seen an obstreperous child in the grocery store, pulling away from her mother, screaming at the top of her lungs. If you’ve been to a large concert where the band doesn't come on stage for hours, you might have been part of an obstreperous crowd: increasingly impatient, with fights breaking out, things thrown up onto the stage, and demands being shouted, "Give us some music before the night is out!" Some people are kind and gentle with strangers, but around their own family turn obstreperous, shouting "You never loved me!" at their mom when she gives them the smaller of two cookies.

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Vocabulary lists containing obstreperous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The first day goes wonderfully well—games of Bananagrams and Boggle, long walks with Rose’s obstreperous Newfoundland Walter.

From The Wall Street Journal • Feb. 20, 2026

This is more than a reissue; it is a reclamation and a delightfully obstreperous collection of material.

From Salon • Dec. 9, 2025

The judge also sanctioned the defendants' lawyers for making "preposterous" legal arguments and fueling their clients' "obstreperous" conduct.

From Reuters • Sep. 26, 2023

They see children as fascinating and try mightily to connect with them — even when the most obstreperous toddler throws a tantrum in their path.

From Washington Post • Feb. 26, 2023

Merle Tuve, who was still struggling to produce high-energy particles with his obstreperous Tesla coil, saw little practical application for Lawrence’s curved variation on a linear accelerator.

From "Big Science" by Michael Hiltzik

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