pendulum

noun

pen·​du·​lum ˈpen-jə-ləm How to pronounce pendulum (audio)
ˈpen-dyə-
-də-
1
: a body suspended from a fixed point so as to swing freely to and fro under the action of gravity and commonly used to regulate movements (as of clockwork)
2
: something (such as a state of affairs) that alternates between opposites
doesn't take much to swing the pendulum of opinion the other way

Examples of pendulum in a Sentence

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.
Makeup is swinging back toward the bold side of the pendulum. Annie Blay-Tettey, Allure, 22 Apr. 2026 According to Siesing, the design pendulum began to swing back in favor of mass production about six decades later. Tessa Cooper, Better Homes & Gardens, 20 Apr. 2026 The pendulum is swinging back to add value to running backs, especially dual-threat running backs like McCaffrey, Gibbs, Bijan Robinson and De’Von Achane. Armando Salguero Outkick, FOXNews.com, 20 Apr. 2026 Sofi and Jordan rekindle friendships and more against a gorgeous backdrop as the pendulum swings between reconciliation and rupture. Ryan Lattanzio, IndieWire, 16 Apr. 2026 See All Example Sentences for pendulum

Word History

Etymology

borrowed from New Latin, noun derivative from neuter of Latin pendulus pendulous

First Known Use

1660, in the meaning defined at sense 1

Time Traveler
The first known use of pendulum was in 1660

Browse Nearby Words

Cite this Entry

“Pendulum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pendulum. Accessed 25 Apr. 2026.

Kids Definition

pendulum

noun
pen·​du·​lum ˈpen-jə-ləm How to pronounce pendulum (audio)
: a body hung from a fixed point so as to swing freely back and forth under the action of gravity
Etymology

from scientific Latin pendulum "something suspended so as to swing freely," from Latin pendulus "suspended," from pendēre "to hang" — related to depend, perpendicular

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