bellwether

noun

bell·​weth·​er ˈbel-ˈwe-t͟hər How to pronounce bellwether (audio)
-ˌwe-
Synonyms of bellwethernext
: one that takes the lead or initiative : leader
also : an indicator of trends

Did you know?

Because it suggests the act of forecasting, one might be inclined to think that bellwether has something to do with weather. But the wether in bellwether has nothing to do with meteorology. Instead, to learn whither wether, we must head to the sheep farm. We usually think of sheep more as followers than leaders, but in a flock one sheep must lead the way. Since long ago, it has been common practice for shepherds to hang a bell around the neck of one sheep in their flock, thereby designating it the lead sheep. This animal was historically called the bellwether, a word formed by a combination of the Middle English words belle (meaning “bell”) and wether (a noun that refers to a male sheep, and today specifically to a castrated male sheep). It eventually followed that bellwether would come to refer to someone who takes initiative or who actively establishes a trend that is taken up by others. This usage first appeared in English in the 15th century and has remained in the language ever since.

Examples of bellwether in a Sentence

She is a bellwether of fashion. High-tech bellwethers led the decline in the stock market. a county that is a bellwether in national elections
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.
While just a few weeks ago, voter concerns about AI data centers and rising utility costs seemed to be replacing gas prices at the pump as the new political bellwether, now surging fuel prices are the focus again. Jordan Blum, Fortune, 14 Mar. 2026 The case, along with two others, has been selected as a bellwether of how thousands of similar lawsuits against social media companies are likely to play out. Arkansas Online, 13 Mar. 2026 The other is FedEx , which is a bellwether for commerce. Jeff Marks, CNBC, 13 Mar. 2026 However, the enthusiasm revolving around the actor has waned recently with Jordan’s win at the Actor Awards, which is seen as a bellwether for the Oscars, particularly in the lead actor category. Los Angeles Times, 12 Mar. 2026 See All Example Sentences for bellwether

Word History

Etymology

Middle English bellewether, belleweder "castrated ram with a bell around his neck followed by the other sheep in a flock, leader," from belle bell entry 1 + wether, weder wether

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of bellwether was in the 15th century

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Cite this Entry

“Bellwether.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bellwether. Accessed 17 Mar. 2026.

Kids Definition

bellwether

noun
bell·​weth·​er ˈbel-ˈwet͟h-ər How to pronounce bellwether (audio)
-ˌwet͟h-
: someone or something that leads the way or points out a trend
a bellwether of fashion
a county that is a bellwether in national elections
Etymology

from earlier bellwether "leading sheep (or wether) of a flock," from the fact that this sheep wore a bell which told the shepherd where the flock was

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