thornier; thorniest
1
: full of thorns
2
: full of difficulties or controversial points : ticklish
a thorny problem
thorniness noun

Examples of thorny in a Sentence

stay out of the thorny brambles unless you want a ton of scratches
Recent Examples on the Web
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.
In the second validation study, a team led by microbiologists José Penadés and Tiago Costa at Imperial College London challenged the AI co-scientist with a thorny question about bacterial evolution. Elie Dolgin, IEEE Spectrum, 25 Sep. 2025 Still, any gun training class will have to land on some key answers to thorny questions that will crop up from trainees. Nick Penzenstadler, USA Today, 25 Sep. 2025 Beyond genre, category placement decisions remain thorny, particularly when two romantic leads must decide whether to split the lead and supporting roles. Clayton Davis, Variety, 25 Sep. 2025 The fate of TikTok became increasingly wrapped up in sweeping trade talks between Washington and Beijing that include strategically thorny topics like tariffs, microchips, rare earth minerals and China's export of chemicals used to make the synthetic opioid fentanyl. John Ruwitch, NPR, 19 Sep. 2025 See All Example Sentences for thorny

Word History

First Known Use

before the 12th century, in the meaning defined at sense 1

Time Traveler
The first known use of thorny was before the 12th century

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Cite this Entry

“Thorny.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thorny. Accessed 1 Oct. 2025.

Kids Definition

thorny

adjective
thornier; thorniest
1
: full of or covered with thorns
thorny rose bushes
2
: full of difficulties
a thorny problem
thorniness noun

More from Merriam-Webster on thorny

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