moldy

adjective

ˈmōl-dē 

moldier; moldiest

1

: of, resembling, or covered with mold

2

a

: being old and moldering : crumbling

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

The inspector found some moldy carrots in the refrigerator and a roach in the restroom. —Harriet Ramos, Fort Worth Star-Telegram, 14 Mar. 2026

Fill a spray bottle with half water and half vinegar, then spray moldy areas. —Brandee Gruener, Southern Living, 13 Mar. 2026

Plastic boards shed microplastics and bamboo options get moldy or even splinter over time. —Stephanie Osmanski, Better Homes & Gardens, 13 Mar. 2026

Storing towels in the bathroom can lead them to become mildewy or moldy, due to the high humidity. —Sarah Lyon, The Spruce, 11 Mar. 2026

Word History

First Known Use

14th century, in the meaning defined at sense 1

Rhymes for moldy

• mouldy
• soldi

Kids Definition

moldy

adjective

ˈmōl-dē 

moldier; moldiest

: resembling, containing, or covered with mold

moldiness noun

Medical Definition

moldy

adjective

variants or chiefly British mouldy

ˈmōl-dē 

moldier or chiefly British mouldier; mouldiest

: covered with a mold-producing fungus

moldy bread