Toughest

He looked the toughest of all the challengers.

From now on, you will become the toughest fifteen year old in the world.

One of the toughest things in the world to do is forgive.

The Administration has already established the toughest fuel economy standards for passenger vehicles in U.S. history. These standards require an average performance equivalent of 54.5 miles per gallon by 2025.

Their car entered one of the toughest races in the world.

This is the toughest role he has ever taken on.

Tom has the toughest job here.

Tom has had the toughest luck.

Sami is the toughest guy I've ever met in my life.

Tom is the toughest guy I've ever met.