\ ˈmōl-dē How to pronounce moldy (audio) \
moldier; moldiest

Definition of moldy

1 : of, resembling, or covered with mold
2a : being old and moldering : crumbling
b : antiquated, fusty moldy tradition

Keep scrolling for more

Other Words from moldy

moldiness noun

Examples of moldy in a Sentence

Her books became moldy after being left in a damp basement. The wine had a slightly moldy aroma.

Recent Examples on the Web

This Note pleads with people to stop eating moldy bread. Ephrat Livni, Quartz, "The problem with Tiffany Cabán and the new cult of “progressive prosecutors”," 28 June 2019 This is the moldy, wet cardboard smell imparted to a wine by a chemical contaminant in cork. Dave Mcintyre, Washington Post, "The fault in our glass: How imperfections can enhance some wines — and even make them memorable," 28 June 2019 Bread brand Arnold now sells 10-slice Simply Small loaves for consumers who can’t bear to throw away moldy slices—or freeze bread for later use. Lydia Belanger, Fortune, "As More Products Are Made for Single People, a Waste Conundrum Emerges," 22 June 2019 Later, June spies the couple bonding over the music, freshly unearthed from a moldy box in the basement. Julie Kosin, Harper's BAZAAR, "Bradley Whitford Is More Confused By His Handmaid's Tale Character Than You," 20 June 2019 News4Jax reports that the location was previously cited for eight violations in February, including moldy kitchen vents and soiled freezer interiors. Paola Pérez,, "Florida Burger King worker caught on video using mop to clean tables: report," 9 June 2019 Last year, the township asked her to either demolish or repair the park’s towering mountain, which once hosted a waterfall but which is now a rickety mound of rotting wood and moldy foam. John Carlisle,, "LAND OF THE LOST Irish Hills tourist stop owner aims to restore dinosaur park," 6 June 2019 What might be a colander full of moldy spaghetti, and other questionable garden-store purchases. Ashley Franklin, The New Yorker, "A Victim of True-Crime Podcasts," 6 June 2019 After quick Google search, I was inundated with tons of articles about how to clean your reusable straw (which seems like a ton of extra work) and how to keep them from getting moldy fast (also, ew). Elizabeth Gulino, House Beautiful, "This Reusable Straw Has a Genius Cleaning Hack That’ll Blow Your Mind," 4 Apr. 2019

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

See More

First Known Use of moldy

14th century, in the meaning defined at sense 1

Keep scrolling for more

Learn More about moldy

Statistics for moldy

Last Updated

14 Jul 2019

Look-up Popularity

Time Traveler for moldy

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

See more words from the same century

Keep scrolling for more

More Definitions for moldy



English Language Learners Definition of moldy

: covered with mold
: resembling mold : tasting, smelling, or looking like mold


\ ˈmōl-dē How to pronounce moldy (audio) \
moldier; moldiest

Kids Definition of moldy

: covered with or containing mold moldy fruit


variants: or chiefly British mouldy \ ˈmōl-​dē How to pronounce mouldy (audio) \
moldier or chiefly British mouldier; mouldiest

Medical Definition of moldy

: covered with a mold-producing fungus moldy bread

Keep scrolling for more

More from Merriam-Webster on moldy

Rhyming Dictionary: Words that rhyme with moldy

Spanish Central: Translation of moldy

Nglish: Translation of moldy for Spanish Speakers

Britannica English: Translation of moldy for Arabic Speakers

Comments on moldy

What made you want to look up moldy? Please tell us where you read or heard it (including the quote, if possible).


an act or instance of editing or removing

Get Word of the Day daily email!

Test Your Vocabulary

What's that Smell?! Quiz

  • wide eyed dog smelling rose
  • Someone who is hircine smells like a:
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!