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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:

During US President Donald Trump's first administration, he even wrote about thorny topics such as the spread of misinformation on his platforms, external.

From BBC Aug. 14, 2026

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

If you haven’t been following the controversy, Wilson felt that Nolan had flattened the saga by mostly erasing the Greek gods and Odysseus’ wit, lust and thorny contradictions.

From Los Angeles Times Aug. 4, 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

He talked nonstop, out of control, in a mix of Igbo and English, like soft meat and thorny bones.

From "Purple Hibiscus" by Chimamanda Ngozi Adichie

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. is unlikely to reduce these much unless it gains ground on thornier issues, especially with Canada on lumber or dairy, says Owen Tedford, an analyst at Beacon Policy Advisors.

From Barron's Jun. 29, 2026

The U.S. and Iran struck a preliminary peace deal last week that broadly calls for a 60-day cease-fire and punted some of the conflict’s thornier issues, such as Iran’s uranium stockpiles.

From MarketWatch Jun. 22, 2026

And a culture of callouts, scandals, and fear may prevent media and publishing from wrestling with much thornier questions of authorship.

From Slate Apr. 17, 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

One of the thorniest retirement decisions is choosing where to live.

From MarketWatch Apr. 10, 2026

Unions say the measure would give them needed leverage and remove political pressure from the thorniest contract questions.

From Los Angeles Times Feb. 11, 2026

By funding independent research organizations, Tech Labs sidesteps some of the thorniest debates about indirect costs and institutional overhead.

From The Wall Street Journal Dec. 12, 2025

The territorial question is one of the thorniest.

From BBC Dec. 11, 2025

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

From "Meltdown" by Deirdre Langeland

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