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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Or the manhole cover, framed with gentle arcs of purple and yellow moth orchids, yellow slipper orchids and pink and white Dancing Lady orchids. Jennifer Vanasco, NPR, 18 Mar. 2026 Refrigerating flour slows oxidation and helps deter pests like weevils and pantry moths. Hannah Lee Leidy, Bon Appetit Magazine, 13 Mar. 2026 And yet — as if in defiance of nature — Death Valley is still a hot spot for wildflower blooms, attracting pollinators such as butterflies, moths, bees and hummingbirds that might not otherwise visit this corner of the California desert. Los Angeles Times, 12 Mar. 2026 Sage can deter cabbage moths when planted with cabbage plants and should be planted alongside marigolds for an extra boost of protection. Haniya Rae, Martha Stewart, 12 Mar. 2026 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 21 Mar. 2026.

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

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