toughness
Translation
strength, difficulty, resilience, firmness
Examples
The toughness of the material was tested.
The toughness of the material was tested.
He is known for his mental toughness.
He is known for his mental toughness.
Grammar Patterns
the toughness of ((sth.)). The toughness of the diamond is legendary.
mental/physical toughness. Athletes need great mental toughness.
Similar Words
Synonyms: durability, strength, resilience; Antonyms: weakness, fragility
Etymology
From the adjective 'tough' + the noun-forming suffix '-ness'.
Memory Tips
It's the quality of being 'tough'. If something is tough, it has toughness.