mildew

1 of 2

noun

mil·​dew ˈmil-ˌdü How to pronounce mildew (audio)
-ˌdyü
1
a
: 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
mildewy
ˈmil-ˌdü-ē How to pronounce mildew (audio)
-ˌdyü-
adjective

mildew

2 of 2

verb

mildewed; mildewing; mildews

transitive verb

: to affect with or as if with mildew

intransitive verb

: to become affected with mildew

Examples of mildew in a Sentence

Noun The basement's damp walls were covered with mildew.
Recent Examples on the Web
Noun
Mold and mildew are types of fungi that can quickly grow anywhere with moisture. Caitlin Sole, Better Homes & Gardens, 10 July 2024 More frequent floods, plus rising heat, lead to greater incidence of mold and mildew, adding to scarcity and costs in housing markets, as well as exacerbating risks to public health, especially in historically Black neighborhoods that are more likely to sit in floodplains, Chu said. Scott Dance, Washington Post, 29 June 2024
Verb
Soggy drywall eventually gets replaced, only to grow damp and mildewed again within months. Curbed, 9 Jan. 2024 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, 5 Dec. 2018 See all Example Sentences for mildew 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'mildew.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

Noun

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

First Known Use

Noun

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

Verb

1552, in the meaning defined at transitive sense

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

Dictionary Entries Near mildew

Cite this Entry

“Mildew.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mildew. Accessed 21 Jul. 2024.

Kids Definition

mildew

1 of 2 noun
mil·​dew ˈmil-ˌd(y)ü How to pronounce mildew (audio)
: a usually whitish growth produced on decaying material or living plants by fungi
also : a fungus producing mildew
mildewy adjective

mildew

2 of 2 verb
: to affect with or become affected with mildew

Medical Definition

mildew

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

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