I saw him yester.

The yester day was filled with joy and laughter.

I saw him yester.

The rosh yeshiva is highly respected in the Jewish community.

There are many yeshivot in the city.

The room was filled with yesmen, all nodding in agreement.

He is a yesman and always agrees with everything his boss says.

Yessotoxins are harmful marine toxins produced by certain species of algae.

Yessirree, I'll get that done right away.

Yessiree, I'll be there!