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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Transfer these foods to storage containers with tightly-fitting lids to keep out pantry moths, roaches, ants, and other critters. Karen Brewer Grossman, Southern Living, 28 Dec. 2025 Most of them spend a decent chunk of time nibbling on beetles, moths, mosquitoes, and the like. Popular Science Team, Popular Science, 3 Dec. 2025 Insects and moths came to dance in the beams of light. Literary Hub, 3 Dec. 2025 Focusing on moth orchids (Phalaenopsis)—the most popular orchids sold as houseplants—here are six common reasons orchid leaves turn yellow and how to fix the problem. Leanne Potts, Better Homes & Gardens, 29 Nov. 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 30 Dec. 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

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