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thorny

American  
[thawr-nee] / ˈθɔr ni /

adjective

  • thornier,
    comparative
  • thorniest
    superlative
  1. abounding in or characterized by thorns; spiny; prickly.

  2. thornlike.

  3. overgrown with thorns or brambles.

  4. painful; vexatious.

    a thorny predicament.

  5. full of difficulties, complexities, or controversial points.

    a thorny question.

    Synonyms:
    ticklish, sticky, tough

thorny British  
/ ˈθɔːnɪ /

adjective

  1. bearing or covered with thorns

  2. difficult or unpleasant

    a thorny problem

  3. sharp

"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

Inflected Forms

Adjectives

Etymology

Origin of thorny

before 1000; Middle English; Old English thornig. See thorn, -y 1

Explanation

Thorny things are either sharp and spiky, like a thorny briar patch, or troublesome and difficult, like a thorny problem. Either way, they can be painful! When you tackle a thorny rosebush, you'll need thick gloves and sharp pruning shears. When you tackle a thorny issue at work or at school, on the other hand, you might need tools like diplomacy and intelligence. This figurative meaning of thorny is useful for describing especially complex or distressing issues, like a thorny political problem that divides a nation.

Keep Reading on Vocabulary.com

Vocabulary lists containing thorny

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.

See Examples For:

However, it also means having to address thorny issues with the media, which currently include a perceived lack of signings.

From BBC Aug. 13, 2026

And then having a new build where it is, down the road from their current ground, deals with the potentially thorny problem about where United would play if Old Trafford was closed for a period.

From BBC Aug. 1, 2026

Even if a compromise is found over the fate of the army chief, Fedorov's future remains a thorny question.

From Barron's Jul. 20, 2026

Cali Adeline’s debut novel, “People Watching in the Desert,” gives this thorny ethical business an impressively complex treatment for a book that comes on like a beach read.

From Los Angeles Times Jul. 14, 2026

In the thorny and sometimes confusing world of America’s masters and enslaved people, did Andrew Jackson have any affection for these men?

From "In the Shadow of Liberty" by Kenneth C. Davis

Those who trust these writers’ capabilities with using comic book properties as springboards to examine thornier issues can probably deduce that “Lanterns” is employing it for a specific reason.

From Salon Aug. 14, 2026

It’s a gauntlet made thornier whenever Murashige, who believes in mercy over violence, engages with Kanbei, chained in a dungeon but with a dangerous mind nonetheless.

From Los Angeles Times Jul. 30, 2026

The U.S. and Iran struck a preliminary deal earlier this week that broadly calls for a 60-day cease-fire and pushes some of the conflict’s thornier issues, such as Iran’s uranium stockpiles, to further discussions.

From MarketWatch Jun. 18, 2026

China, he said, might hope "that will put Trump and his team in a positive frame of mind when they're then discussing more complex, thornier issues".

From Barron's May 8, 2026

At present he is plain human, with the world-old malady gnawing at his heart, a pain which threatens to send his cogitations whooping down a thornier and rosier lane than any Buddha ever knew.

From The Lady and Sada San A Sequel to the Lady of the Decoration by Frances Little

Fox is in the camp that believes AI will free lawyers from repetitive tasks and let them focus on the thorniest issues.

From The Wall Street Journal Jul. 26, 2026

Whether those talks — which were meant to deal with the thorniest issues between the two countries, including the Strait of Hormuz and Iran’s nuclear program — will go ahead remains unclear.

From Los Angeles Times Jul. 8, 2026

But negotiations on some of the thorniest issues - including Iran's nuclear programme - will be deferred for 60 days, raising questions about how long this agreement will last.

From BBC Jun. 18, 2026

The chapter on fisheries, expected to be the thorniest as Iceland is intent on retaining control over its resources, had not been opened.

From Barron's Mar. 6, 2026

The Reagan had run afoul of nuclear power’s thorniest problem: radioactive isotopes.

From "Meltdown" by Deirdre Langeland

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