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spelunk

[ spi-luhngk ]
/ spɪˈlʌŋk /
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verb (used without object)
to explore caves, especially as a hobby.
QUIZ
QUIZ YOURSELF ON "IS" VS. "ARE"
"Is" it time for a new quiz? "Are" you ready? Then prove your excellent skills on using "is" vs. "are."
Question 1 of 7
IS and ARE are both forms of which verb?

Origin of spelunk

Back formation from spelunker, spelunking
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
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