- Posterity means people in the future.
- The baseball player is remembered by posterity as one of the best players who ever lived.
- If we cut down all of the world's trees, there will be none left for posterity.
- Posterity means all the people who are descendants of one person (that person's children, grandchildren, great-grandchildren, great-great-grandchildren, etc.)
- The people wanted a better government so they could have freedom for themselves and their posterity.
- We are saving money now so our posterity do not have to work as hard as we did.