One is the smallest odd number.

Source: Tatoeba

Mercury is the smallest of the eight planets in the Solar System.

Source: Tatoeba

The best wealth is knowledge, average wealth is children, and the smallest wealth is material objects.

Source: Tatoeba

Tom is the youngest of ten children.

Source: Tatoeba

The youngest siblings are in general the most beautiful ones.

Source: Tatoeba

Even the most carefully made plans frequently result in failure.

Source: Tatoeba

I want to become the stingiest one.

Source: Tatoeba

How tall is your youngest brother?

Source: Tatoeba

Mercury is the smallest planet in our solar system.

Source: Tatoeba

An expert is a person who has made all the mistakes that can be made in a very narrow field.

Source: Tatoeba