- covered with mould
- stale or musty, esp from age or lack of use
- slang boring; dull
WordReference Random House Unabridged Dictionary of American English © 2026
mould•y
(mōl′dē),USA pronunciation n., pl. mould•ies. [Brit. Mil. Slang.]
- Military, British Termsa torpedo.
- probably identical with Scottish and north dialect, dialectal moudie a mole 1915–20
Collins Concise English Dictionary © HarperCollins Publishers::
mouldy, US moldy /ˈməʊldɪ/ adj (mouldier, mouldiest) ( US moldier, moldiest)
mold•y /ˈmoʊldi/USA pronunciation
adj., -i•er, -i•est.
WordReference Random House Unabridged Dictionary of American English © 2026- Fungiovergrown or covered with mold.
- musty, as from age:a moldy old attic.
- Informal Termsold-fashioned;
outmoded:moldy, boring professors.
mold•y
(mōl′dē),USA pronunciation adj., mold•i•er, mold•i•est.
mold′i•ness, n.
- Fungiovergrown or covered with mold.
- musty, as from decay or age.
- Informal Termsold-fashioned;
outmoded:moldy ideas about higher education.
- 1350–1400; Middle English; see mold2, -y1
Collins Concise English Dictionary © HarperCollins Publishers::
moldy /ˈməʊldɪ/ adj (moldier, moldiest)
- the US spelling of mouldy
'mouldy' also found in these entries (note: many are not synonyms or translations):