ebb out (verb)

1. After reaching its peak during the Roman Empire, the popularity of gladiator fights began to ebb out.

2. As the sun set over the horizon, the waves gently ebb out, creating a romantic atmosphere on the beach.

3. Why did the ocean break up with the moon? Because their love seemed to ebb out!

4. In the distant future, humans have colonized a planet where the tides mysteriously ebb out for hours instead of minutes.