plural moths ˈmȯt͟hz How to pronounce moth (audio) ˈmȯths How to pronounce moth (audio)
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2
: 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
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TikTok has also fueled interest in colorful beetle and moth costumes, with creators showing off bold, iridescent patterns and playful, over-the-top designs. Elizabeth Fogarty, Better Homes & Gardens, 6 Oct. 2025 Instead, the moths hitch a ride on air currents or tropical storms coming from Central and South America, southern Florida, and southern Texas. Arricca Elin Sansone, Southern Living, 6 Oct. 2025 There is not a thief or any army of moths on earth that can destroy this kind of treasure. Bea L. Hines, Miami Herald, 3 Oct. 2025 Box tree moth damage is confined to the boxwood, according to the blog. Chad Murphy, Cincinnati Enquirer, 2 Oct. 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 8 Oct. 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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