plural moths ˈmȯt͟hz How to pronounce moth (audio) ˈmȯths How to pronounce moth (audio)
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: any of various usually nocturnal lepidopteran insects with antennae that are often feathery, with a stouter body, duller coloring, and proportionately smaller wings than the butterflies, and with larvae that are plant-eating caterpillars
mothlike adjective
mothy adjective

Examples of moth in a Sentence

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.
The 21-acre garden at family-run Butterfly Ridge Conservation Center has more than 60 species of butterflies and 1,094 different moth species. Jen Murphy, Outside Online, 24 Feb. 2025 On the prey side, evidence has been found that the scales on some moths’ wings absorb sound waves from predatory bats to keep them from echolocation to find them. Tim Stevens, Ars Technica, 22 Feb. 2025 Bacteria can grow and damage the knitted fabric, or moths can make its way to eat the bacteria in the threads. The Washington Post, San Diego Union-Tribune, 22 Feb. 2025 Every day, visitors can watch butterflies and moths that have just emerged from their chrysalises take their first flight into the haven. Emily McClanathan, Chicago Tribune, 11 Feb. 2025 See All Example Sentences for moth

Word History

Etymology

Middle English mothe, from Old English moththe; akin to Middle High German motte moth

First Known Use

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

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

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Cite this Entry

“Moth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/moth. Accessed 19 Mar. 2025.

Kids Definition

moth

noun
plural moths ˈmȯt͟hz How to pronounce moth (audio) ˈmȯths How to pronounce moth (audio)
: any of a group of night-flying insects that are lepidopterans often with duller coloring, stouter bodies, and smaller wings than the related butterflies and with antennae which are often feathery

More from Merriam-Webster on moth

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