mildew

noun
mil·​dew | \ ˈmil-ˌdü How to pronounce mildew (audio) , -ˌdyü \

Definition of mildew

 (Entry 1 of 2)

1a : a superficial usually whitish growth produced especially on organic matter or living plants by fungi (as of the families Erysiphaceae and Peronosporaceae)
b : a fungus producing mildew
2 : a discoloration caused by fungi

mildew

verb
mildewed; mildewing; mildews

Definition of mildew (Entry 2 of 2)

transitive verb

: to affect with or as if with mildew

intransitive verb

: to become affected with mildew

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Other Words from mildew

Noun

mildewy \ ˈmil-​ˌdü-​ē How to pronounce mildew (audio) , -​ˌdyü-​ \ adjective

Examples of mildew in a Sentence

Noun The basement's damp walls were covered with mildew.
Recent Examples on the Web: Noun Mold, mildew, and even tar and oil stains are no match for these powerful tools. Better Homes & Gardens, "The 8 Best Electric Pressure Washers to Zap Dirt in Seconds," 22 Feb. 2021 Add three-fourths of a cup of chlorine bleach to the laundry detergent if there’s mold or mildew. oregonlive, "Get your bathroom sparkling with these spring cleaning tips and tricks," 25 Mar. 2021 The self-priming formula offers great coverage with a highly durable, washable finish that resists grime and mildew. Jessica Bennett, Better Homes & Gardens, "This Designer-Founded Paint Brand Makes Picking the Perfect Wall Color So Simple," 12 Mar. 2021 Let knives dry completely before storing them, as even a little bit of dampness can cause rust or mildew to form. Katy Severson, chicagotribune.com, "How to care for kitchen knives," 22 Feb. 2021 Finish by spraying a grout sealant to keep out future mildew. Roy Berendson, Popular Mechanics, "How to Clean Dirty Grout," 27 Jan. 2021 Dampness is a breeding ground for bacteria, mold and mildew. Washington Post, "Hints From Heloise: Teddy bear needs a bath," 12 Mar. 2021 Teachers have been complaining about poor conditions of Rickards, including mold and mildew, for years. Scott Travis, sun-sentinel.com, "School’s collapsed roof recalls crash from 42 years ago," 9 Mar. 2021 To get the most years out of your shelter, dry it completely after every trip to prevent mold and mildew. Outdoor Life, "Best Ice Fishing Shelter: How to Find Your Winter Home on the Ice," 26 Feb. 2021 Recent Examples on the Web: Verb The Issue: Mildew If the grout is mildewed or badly stained, mix a 50/50 solution of oxygen bleach and water, and apply it with a sponge or pump-up sprayer. Joseph Truini, Popular Mechanics, "How to Clean Dirty Grout," 5 Dec. 2018 Residents have reported sagging porches, mildewing wood and leaky roofs. Fox News, "Brad Pitt's foundation facing lawsuit over degradation of New Orleans homes," 30 Aug. 2018 Of course, that is a gift that expires, one that quickly mildews into a curse. Richard Lawson, Vanities, "Chloë Grace Moretz and Brooklyn Beckham’s Reunion Proves Young Love Is Complicated," 9 Oct. 2017 Of course, that is a gift that expires, one that quickly mildews into a curse. Richard Lawson, vanityfair.com, "Chloë Grace Moretz and Brooklyn Beckham’s Reunion Proves Young Love Is Complicated," 9 Oct. 2017 On a recent day, the inside walls of the home were mildewed and the clothes still in the closet were showing spots. Mimi Whitefield, miamiherald, "Cuban fishing village made famous by Hemingway busy with recovery efforts after Irma," 5 Oct. 2017 The piles up and down this street, and along many other nearby streets — shards of wallboard and mildewing carpet, artificial flowers and computer monitors — stand taller than some people. Alan Blinder, The Seattle Times, "Hauling away Harvey’s debris an enormous, urgent task," 6 Sep. 2017 The piles up and down this street, and along many other nearby streets — shards of wallboard and mildewing carpet, artificial flowers and computer monitors — stand taller than some people. John Schwartz And Alan Blinder, New York Times, "An Enormous, Urgent Task: Hauling Away Harvey’s Debris," 6 Sep. 2017 For the past 20 years, my husband, Alex, and I—West Coast transplants and die-hard beach people—have spent a ridiculous amount of money to rent a mildewing summer house on the tip of Long Island. Rebecca Misner, CNT, "For the Ultimate Mediterranean Sailing Trip, Ditch the Captain and Crew," 20 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mildew.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of mildew

Noun

14th century, in the meaning defined at sense 1a

Verb

1552, in the meaning defined at transitive sense

History and Etymology for mildew

Noun

Middle English, from Old English meledēaw honeydew; akin to Old High German militou honeydew

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Time Traveler for mildew

Time Traveler

The first known use of mildew was in the 14th century

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Statistics for mildew

Last Updated

20 Apr 2021

Cite this Entry

“Mildew.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mildew. Accessed 11 May. 2021.

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More Definitions for mildew

mildew

noun

English Language Learners Definition of mildew

: a usually white substance that grows on the surface of things in wet, warm conditions

mildew

noun
mil·​dew | \ ˈmil-ˌdü How to pronounce mildew (audio) , -ˌdyü \

Kids Definition of mildew

 (Entry 1 of 2)

1 : a thin whitish growth produced by a fungus especially on decaying material or on living plants
2 : a fungus producing mildew

mildew

verb
mildewed; mildewing

Kids Definition of mildew (Entry 2 of 2)

: to become affected with mildew

mildew

noun
mil·​dew | \ ˈmil-ˌd(y)ü How to pronounce mildew (audio) \

Medical Definition of mildew

1 : a superficial usually whitish growth produced especially on organic matter or living plants by fungi (as of the families Erysiphaceae and Peronosporaceae)
2 : a fungus producing mildew

More from Merriam-Webster on mildew

Nglish: Translation of mildew for Spanish Speakers

Britannica.com: Encyclopedia article about mildew

Comments on mildew

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