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Synonyms

moldy

American  
[mohl-dee] / ˈmoʊl di /

adjective

moldier, moldiest
  1. overgrown or covered with mold.

  2. musty, as from decay or age.

  3. Informal. old-fashioned; outmoded.

    moldy ideas about higher education.


moldy British  
/ ˈməʊldɪ /

adjective

  1. the US spelling of mouldy

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • moldiness noun
  • unmoldy adjective

Etymology

Origin of moldy

Middle English word dating back to 1350–1400; mold 2, -y 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The bed was wonderfully comfortable, though the shower in the spacious bathroom had a faint moldy smell.

From Salon • Mar. 7, 2026

Brekke calls it “the worst pit I’ve ever seen,” moldy and full of trash.

From Salon • Dec. 18, 2025

For Christmas dinner, they toasted moldy bread, and Gibbons surprised everyone with a single can of Spam that they split among everyone.

From Los Angeles Times • Oct. 26, 2025

“He’s been wearing it for 35 years, so it’s a bit more aged in a moldy, mildewy way. We did a little fake tummy to make him look a little bit middle-aged,” Atwood says.

From Los Angeles Times • Dec. 24, 2024

It carried Cold Sassy’s disabled veterans and the moldy old ones.

From "Cold Sassy Tree" by Olive Ann Burns