UNDISCIPLINED Synonyms: 117 Similar and Opposite Words

undisciplined

adjective

Definition of undisciplined

as in adamant

behaving in a way that is not properly controlled, organized, serious, etc.; lacking discipline He has been very undisciplined about studying. undisciplined children

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of undisciplined But also, a problem for our team is undisciplined fouling at times. — Paul Sullivan, Chicago Tribune, 7 Apr. 2026 Miami kept pace early thanks to a similarly efficient start by Adebayo (eight points in the first 98 seconds) and some undisciplined Celtics defense, which gifted the Heat 10 trips to the foul line in the opening eight minutes. — Zack Cox, Boston Herald, 2 Apr. 2026 Meanwhile, on the court, USC was looking undisciplined among the refined style of play that UCLA had settled into. — Haley Sawyer, Oc Register, 8 Mar. 2026 After leading the Kings to a franchise-best 48 wins and 105 points in his first full season as coach, Hiller failed to replicate that success with a team that has appeared unorganized and undisciplined for much of the season. — Los Angeles Times, 1 Mar. 2026 See All Example Sentences for undisciplined

Recent Examples of Synonyms for undisciplined

Adjective

Coach Ryan Day has been adamant most of his career that Ohio State will remain Ohio State no matter who is calling plays.

— Cameron Teague Robinson, New York Times, 21 Aug. 2026
Vendors say business will continue after Parlor The food tenants who have spoken out about the sudden closure have all been adamant that this isn’t where their businesses end.

— Kansas City Star, Kansas City Star, 20 Aug. 2026

Definition of adamant

Adjective

Its central character, Missie, a rebellious young woman who joins military intelligence, was inspired by Sue, who died in 2023 at age 99.

— Stephanie Nolasco, FOXNews.com, 23 Aug. 2026
Follow rebellious 16-year-old Holden Caufield to New York City in Catcher in the Rye, in a tale that will evoke both humor and empathy from readers in equal measure.

— Caroline Rogers, Southern Living, 22 Aug. 2026

Definition of rebellious

Adjective

Under the Immigration and Nationality Act, citizenship may be revoked if it was illegally procured or obtained through the concealment of a material fact or willful misrepresentation.

— Walter Pavlo, Forbes.com, 12 Aug. 2026
The emotional Moon moves through your 10th House of Career and squares the willful Sun in your 1st House of Identity.

— Tarot.com, The Orlando Sentinel, 5 Aug. 2026

Definition of willful

Adjective

Heavy Metal earned raves for its unruly combination of intimate songwriting, feverish emotion and left-field ambition, and the Carnegie Hall performance put that material in a setting almost comically grand enough to match its scale.

— SPIN Staff, SPIN, 19 Aug. 2026
Verano centers on an unruly teen whose plans for a carefree summer are disrupted when his parents welcome an asylum seeker into their home.

— Chris Gardner, HollywoodReporter, 18 Aug. 2026

Definition of unruly

Adjective

The location and time of the shooting were unknown as of Sunday, as the victim was uncooperative.

— Adam Harrington, CBS News, 23 Aug. 2026
Unfortunately for Kevin, Wile turns out to be an uncooperative client, even when Acme’s smarmy lawyer Buddy Crane (John Cena), with whom Kevin has history, offers an eye-popping $50,000.

— Frank Scheck, HollywoodReporter, 12 Aug. 2026

Definition of uncooperative

Adjective

Conduct disorder affects children and teens and involves a consistent pattern of disobedient and aggressive behaviors.

— Kristen Rogers, CNN Money, 21 May 2026
Rising gas prices and an unpopular war in Iran have infuriated prominent MAGA figures online, but in terms of GOP elections, the president has been able to elbow out critics in Congress and disobedient legislators in red states.

— Phillip M. Bailey, USA Today, 17 May 2026

Definition of disobedient

Adjective

Captured after years on the run and sentenced to life in 2017, Mladic remained defiant and unrepentant, still revered by some Serbs as a nationalist hero.

— Jovana Gec, Los Angeles Times, 27 Aug. 2026
Bringing it on board with the White House’s latest effort to subdue an Iranian leadership stubbornly defiant after almost six months of war, however, is an extremely tall order.

— Simone McCarthy, CNN Money, 26 Aug. 2026

Definition of defiant

Browse Nearby Words

undirected

undisciplined

undisclosed

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Cite this Entry

Style

“Undisciplined.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/undisciplined. Accessed 30 Aug. 2026.

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Synonyms of undisciplined

adjective

Example Sentences

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