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obstinate

American  
[ob-stuh-nit] / ˈɒb stə nɪt /

adjective

  1. firmly or stubbornly adhering to one's purpose, opinion, etc.; not yielding to argument, persuasion, or entreaty.

    Synonyms:
    pertinacious, refractory, inflexible, perverse, intractable, unbending, unyielding, obdurate, mulish
    Antonyms:
    tractable, submissive
  2. characterized by inflexible persistence or an unyielding attitude; inflexibly persisted in or carried out.

    obstinate advocacy of high tariffs.

  3. not easily controlled or overcome.

    the obstinate growth of weeds.

  4. not yielding readily to treatment, as a disease.


obstinate British  
/ ˈɒbstɪnɪt /

adjective

  1. adhering fixedly to a particular opinion, attitude, course of action, etc

  2. self-willed or headstrong

  3. difficult to subdue or alleviate; persistent

    an obstinate fever

"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

Related Words

See stubborn.

Other Word Forms

  • obstinately adverb
  • obstinateness noun
  • superobstinate adjective
  • superobstinately adverb
  • superobstinateness noun
  • unobstinate adjective
  • unobstinately adverb

Etymology

Origin of obstinate

First recorded in 1350–1400; Middle English, from Latin obstinātus (past participle of obstināre “to set one's mind on, be determined”), equivalent to ob- ob- + -stin-, combining form of stan- (derivative of stāre “to stand,” stand ) + -ātus -ate 1

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.

As an evocation of a remarkable figure, by turns obstinate and unexpectedly endearing, Longford’s book remains unsurpassed.

From The Wall Street Journal • Jan. 9, 2026

The guard was obstinate in refusing to provide one.

From Salon • Aug. 21, 2025

He excelled at convincing even the obstinate to trust him.

From Los Angeles Times • May 12, 2024

But he added, he is "a pretty obstinate person".

From BBC • Apr. 14, 2024

It took another ten to click around and get the internet to work, because sometimes my computer was just, I don’t know, obstinate.

From "A Very Large Expanse of Sea" by Tahereh Mafi