at a moment's/minute's notice
phrase
: immediately after one has been told about something
They're prepared to help us at a moment's notice.
They can be ready to go at a moment's notice.
Cite this Entry
“At a moment's/minute's notice.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/at%20a%20moment%27s%2Fminute%27s%20notice. Accessed 12 Mar. 2026.
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Merriam-Webster unabridged
