mildew

From Wiktionary

Pronunciation[change]

Noun[change]

Singular
mildew

Plural
none

  1. (plant disease) Mildew is a growth of small powdery and whitish fungi that is found on various diseased or decaying substances.

Verb[change]

Plain form
mildew

Third-person singular
mildews

Past tense
mildewed

Past participle
mildewed

Present participle
mildewing

  1. (transitive) If something is mildewed, it is affected by mildew
    The walls were very damp and mildewed.