mildew
B2Neutral to formal; common in household, gardening, agricultural, and property maintenance contexts.
Definition
Meaning
A thin, superficial fungal growth that appears as a white or greyish powdery or fluffy coating on organic surfaces, especially in damp conditions.
Can refer to the resulting damage, discoloration, or musty odor caused by such fungal growth. Figuratively, it can describe something that spoils, corrupts, or deteriorates.
Linguistics
Semantic Notes
Often associated with neglect, dampness, and decay. While similar to 'mold,' 'mildew' typically refers to a specific type of surface fungus, often lighter in color and easier to remove. The term can be used both for the organism itself and its visible effect.
Dialectal Variation
British vs American Usage
Differences
Usage is largely identical. Slight preference in British English for 'mould' as the more general term, with 'mildew' specifying a surface-growth type. In American English, 'mold' and 'mildew' are more distinctly separate in common usage.
Connotations
Both varieties share connotations of dampness, neglect, and spoilage. No significant difference in connotation.
Frequency
Comparable frequency in both varieties. Slightly higher in American DIY/home improvement contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
[mildew] + [verb: grows/forms/spreads/attacks][subject: damp/leak] + [causes/leads to/encourages] + [mildew][verb: remove/clean/scrub] + [mildew] + [prepositional phrase: from the surface]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Mildew of the soul (figurative, rare)”
- “To mildew over (to become covered or affected by mildew)”
Usage
Context Usage
Business
In property management/real estate: 'The survey revealed mildew in the basement, indicating a damp-proofing issue.'
Academic
In botany/plant pathology: 'The grape crop was severely affected by downy mildew (Plasmopara viticola).'
Everyday
'I need to clean the mildew off the shower curtain.'
Technical
In conservation: 'The manuscript required treatment for active mildew colonies on the vellum.'
Examples
By Part of Speech
verb
British English
- The old books in the cellar had begun to mildew.
- Leather will mildew if stored in a damp place.
American English
- The fabric mildewed in the humid garage.
- If you don't fix that leak, the drywall will mildew.
adjective
British English
- The mildewed curtains had to be thrown out.
- A mildewy smell pervaded the old cottage.
American English
- We replaced the mildewed shower liner.
- The basement had a distinct, mildewy odor.
Examples
By CEFR Level
- There is mildew in the bathroom.
- Mildew looks white and powdery.
- You should clean the mildew off the windowsill with a special spray.
- Damp clothes can develop mildew if left in the washing machine.
- The persistent damp problem led to widespread mildew on the interior walls.
- Gardeners often struggle with powdery mildew on roses during wet summers.
- The conservationist identified the specific strain of mildew threatening the archive and recommended a controlled humidity treatment.
- His inaction allowed resentment to mildew into outright hostility among the staff.
Learning
Memory Aids
Mnemonic
Think: MILDeW = 'Mild Damp leads to White growth.'
Conceptual Metaphor
CORRUPTION IS MILDEW (e.g., 'The scandal was a mildew on his reputation.'), NEGLECT BREEDS DECAY.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'плесень' (mould/mold). While related, 'mildew' is a specific type. Use 'плесневой грибок' or 'милдью' (borrowed, used in viticulture).
Common Mistakes
- Using 'mildew' and 'mould/mold' as perfect synonyms. 'Mildew' is often surface-level and powdery; 'mold' can be deeper and fuzzier. Confusing pronunciation: /ˈmaɪl.duː/ is incorrect.
- Misspelling as 'mildue' or 'milldew'.
Practice
Quiz
Which of these is most specifically a type of mildew?
FAQ
Frequently Asked Questions
It can cause allergic reactions and respiratory irritation for some people, similar to other moulds, but it is generally considered less hazardous than some toxic black moulds.
Mildew is a specific type of surface fungus, often flat, powdery, and light-coloured (white/grey). Mould is a broader term for various fungi that can be fuzzier, deeper, and come in many colours (green, black, blue).
Yes, meaning 'to become affected with mildew' (e.g., 'The bread mildewed in the damp pantry').
Control humidity, ensure good ventilation, fix leaks promptly, and keep surfaces clean and dry.