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.
This smart alarm clock makes getting up — and going to bed — a little easier. Bestreviews, Mercury News, 30 Mar. 2026 Choose from multiple models to fit your space, including the Mini Restful, which combines an air purifier and alarm clock with a personalized sunrise and soothing sounds. Tory Johnson, ABC News, 26 Mar. 2026 Amazon Smart Speaker Deals The Echo Spot is a versatile smart alarm clock that combines a vibrant, customizable display with surprisingly rich audio for its size. Juhi Wadia, PC Magazine, 25 Mar. 2026 In practice, this can mean swapping a glowing alarm clock for a traditional one with moving hands, or replacing scrolling with listening to vinyl. Jacorey Moon, Architectural Digest, 12 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 4 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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