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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Crossing Thousands of Miles of Open Ocean Hawaiian leaf-roller moths are among the most successful long-distance colonizers of any native Hawaiian animals, according to the research. Hanna Wickes, Charlotte Observer, 6 Apr. 2026 According to the research, Hawaiian leaf-roller moths are among the most successful long-distance colonizers of any native Hawaiian animals. Hanna Wickes, Miami Herald, 6 Apr. 2026 Rest assured, the zapper’s light attracts a myriad of flying pests, including gnats, flies, moths, and wasps. Maggie Horton, PEOPLE, 3 Apr. 2026 However, growing strongly scented rosemary plants near brassicas naturally repels many common garden pests, including cabbage moths. Lauren Landers, Better Homes & Gardens, 2 Apr. 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 11 Apr. 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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