toughness

IPA: tˈʌfnʌs

(uncountable) The state of being tough.
(materials science, physics, of a metal) Resistance to fracture when stressed, or the degree of such resistance.
(psychologically, emotionally, or biologically) Fortitude; hardiness; mettle.
A formidable difficulty.

Examples of "toughness" in Sentences

Clinton's so called toughness is divisive unless you are in her camp.
That kind of toughness is a big reason they lead the NHL with 33 points.
But the people of Michigan are tough, too, and this toughness is reflected on the football field by the Lions.
Not only the way he played through the physical pain, but to have that mental toughness is completely admirable.
There was always a certain toughness about him, a stony aloofness, a quality Uncle Merlin likes to call “flintiness.”
He spends the rest of his piece outlining what he calls the toughness gap, but what he has illustrated is in fact a decency gap.
But as long as hard hits are part of the fabric of the game, a mark by which players 'toughness is measured, one rule change will not be enough.
Close with it, wrestle it: sheer obstinate toughness of muscle; but much more, what we call toughness of heart, which will mean persistence hopeful and even desperate, unsubduable patience, composed candid openness, clearness of mind: all this shall be
Close with it, wrestle it: sheer obstinate toughness of muscle; but much more, what we call toughness of heart, which will mean persistance hopeful and even desperate, unsubduable patience, composed candid openness, clearness of mind: all this shall be 'strength' in wrestling your dragon; the whole man's real strength is in this work, we shall get the measure of him here.