moldier; moldiest
1
: of, resembling, or covered with mold
2
b
: antiquated, fusty
moldy tradition
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
Additionally, Vallo says that the lack of ventilation in plastic containers causes fruits to get moldy and mushy because of the moisture buildup.
—
Ashlyn Needham, Southern Living, 22 Sep. 2025
Nearly 100 years ago, in 1928, Scottish physician Alexander Fleming famously noticed that, in a moldy Petri dish, Penicillium notatum had destroyed the bacteria around it (even if penicillin would still be more than a decade away from development).
—New Atlas, 20 Sep. 2025
The facility reportedly did not have a clock, and the mattresses were moldy.
—Miranda Jeyaretnam, Time, 15 Sep. 2025
Reports of blood on the floor of a meat market; roach, fly and cricket infestations; and moldy ice machines and coolers sum up August’s health inspection reports for the metroplex.
—Ella Gonzales, Fort Worth Star-Telegram, 8 Sep. 2025
See All Example Sentences for moldy
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Ashlyn Needham, Southern Living, 22 Sep. 2025
Nearly 100 years ago, in 1928, Scottish physician Alexander Fleming famously noticed that, in a moldy Petri dish, Penicillium notatum had destroyed the bacteria around it (even if penicillin would still be more than a decade away from development).
—New Atlas, 20 Sep. 2025
The facility reportedly did not have a clock, and the mattresses were moldy.
—Miranda Jeyaretnam, Time, 15 Sep. 2025
Reports of blood on the floor of a meat market; roach, fly and cricket infestations; and moldy ice machines and coolers sum up August’s health inspection reports for the metroplex.
—Ella Gonzales, Fort Worth Star-Telegram, 8 Sep. 2025
See All Example Sentences for moldy
Cite this Entry
“Moldy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/moldy. Accessed 26 Sep. 2025.
Copy CitationKids Definition
moldy
adjective
moldier; moldiest
: resembling, containing, or covered with mold
moldiness
noun
Medical Definition
moldy
adjective
variants
or chiefly British mouldy
moldier or chiefly British mouldier; mouldiest
: covered with a mold-producing fungus
moldy bread
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