weathercock
/ˈwɛðərˌkɑk/
noun
- A weather vane shaped like a rooster, used to show the direction of the wind.
- The old barn had a rusty weathercock on its roof that spun in the breeze.
- Farmers used a weathercock to help predict changes in the weather.
- The weathercock pointed east, indicating the wind was coming from that direction.
- A person who frequently changes their opinions or loyalties.
- Don't be a weathercock—stick to your principles even when it's hard.
- The manager was called a weathercock because he changed the company policy every week.
- Politicians who are weathercocks often lose the trust of their voters.