Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun bellwether

2 senses of bellwether

Sense 1
bellwether -- (someone who assumes leadership of a movement or activity)
       => leader -- (a person who rules or guides or inspires others)

Sense 2
bellwether -- (sheep that leads the herd often wearing a bell)
       => wether -- (male sheep especially a castrated one)