Dictionary.com
Thesaurus.com

mouldy

American  
[mohl-dee] / ˈmoʊl di /

noun

British Military Slang.

plural

mouldies
  1. a torpedo.


mouldy British  
/ ˈməʊldɪ /

adjective

  1. covered with mould

  2. stale or musty, esp from age or lack of use

  3. slang boring; dull

"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

  • mouldiness noun

Etymology

Origin of mouldy

1915–20; probably identical with Scottish and north dial. moudie a mole

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.

NHS Grampian said all the mouldy materials have now been removed and it was confident patient safety would not be compromised.

From BBC • Mar. 19, 2026

Homelessness charity Shelter agreed with the government that "no child should be growing up in a B&B or mouldy bedsit".

From BBC • Dec. 4, 2025

In her view, asthma cases linked to mouldy homes are all too familiar.

From BBC • Oct. 26, 2025

A baby who lived in a mouldy housing association flat in north London died of unrelated causes, a coroner has found.

From BBC • Aug. 18, 2025

Janie felt glad of the thought, for then it wouldn’t seem so destructive and mouldy.

From "Their Eyes Were Watching God" by Zora Neale Hurston