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spelunk

American  
[spi-luhngk] / spɪˈlʌŋk /

verb (used without object)

  1. to explore caves, especially as a hobby.


Etymology

Origin of spelunk

Back formation from spelunker, spelunking

Explanation

To spelunk is to explore natural caves. Geologists do a lot of spelunking. This is a weird-looking word, but it has a simple meaning: to explore natural caves. Scientists who study natural formations of the Earth do a lot of spelunking. Through spelunking, you can find evidence of difference minerals, as well as fossils of various animals. Archaeologists spelunk to find remnants of previous civilizations. Some people spelunk as a hobby: they are spelunkers.

Keep Reading on Vocabulary.com

Vocabulary lists containing spelunk

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.

Wineman isn’t afraid to spelunk truly deranged depths, but what’s remarkable is how much style he incorporates into the film’s most outré moments.

From Salon • Apr. 5, 2026

Blood Incantation’s talk might feel like a spelunk into a hyper-omnivorous groupmind, but other episodes show minds getting changed in real time.

From Washington Post • Jan. 5, 2023

Nonskiers in the crowd can do everything from bobsled on the world’s fastest track to spelunk in an ancient ice cave.

From New York Times • Nov. 30, 2019

Maybe as a result of these unfair conditions, Wansink perhaps understandably sent his research assistant to spelunk through what had been very costly data to collect.

From Slate • Feb. 3, 2017

Every few months, I spelunk into the world of online indie television.

From The New Yorker • Jun. 9, 2014