overnight
/əʊvə(ɹ)ˈnaɪt/ adverb B1- During or throughout the night, especially during the evening or night just past. · Let it run overnight and we'll check on it in the morning.· They delivered the package overnight.
- In a very short (but unspecified) amount of time. · The change seemed to happen overnight.
From the library
Almost overnight, the city streets were alive with incredible new music, art, and literature.
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