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
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There are more than 11,000 species of moth in the United States, with over 1,400 species found in Florida. Joe Rassel, The Orlando Sentinel, 10 July 2025 The lantern-style device features a blue-violet light to attract gnats, mosquitos, wasps, moths, and more, while the plastic surrounding and 4200V voltage traps and zaps them for good. Alicia Geigel, Southern Living, 9 July 2025 Luna moths need sweet gum and hickory, and question mark butterflies need hackberry trees. Sophie Hartley, IndyStar, 7 July 2025 Avoid pruning your lemon tree in summer and fall when leaf miner moth numbers are at their annual peak. Megan Hughes, Better Homes & Gardens, 21 June 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 17 Jul. 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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