The toughener is added to the paint to make it more durable.

She fought toughly to defend her title.

Regular exercise toughens the body and strengthens the mind.

He toughened up after facing many challenges.

He is toughening up his body by lifting weights.

The toughening of the steel increases its durability.

The museum displayed several toughras from different periods.

The toughra is a calligraphic monogram used as a royal signature in Ottoman Empire.

The toughies in the competition were determined to win.

The steak was toughish, but still edible.