alarm clock

noun

Synonyms of alarm clocknext
: a clock that can be set to sound an alarm at a desired time

Examples of alarm clock in a Sentence

She set the alarm clock for six o'clock. The alarm clock went off at six o'clock.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Buy a tiny folding travel alarm clock. Marla Jo Fisher, Oc Register, 15 Apr. 2026 Where to Start The simplest move is charging your phone in another room and using a separate alarm clock, which removes the most common excuse for keeping it bedside. Allison Palmer, Miami Herald, 13 Apr. 2026 In 2007, as the 20-year anniversary loomed, an alarm clock went off in my gut. Kate Crane, Rolling Stone, 2 Apr. 2026 This smart alarm clock makes getting up — and going to bed — a little easier. Bestreviews, Mercury News, 30 Mar. 2026 See All Example Sentences for alarm clock

Word History

First Known Use

1662, in the meaning defined above

Time Traveler
The first known use of alarm clock was in 1662

Browse Nearby Words

Cite this Entry

“Alarm clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/alarm%20clock. Accessed 18 Apr. 2026.

Kids Definition

alarm clock

noun
: a clock that can be set to sound an alarm at any desired time

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