toughness
n. uncountablen. the quality of being strong and able to handle difficult situations or physical pressure. You use this to describe someone who doesn't give up easily or a material that is hard to break.
n. the ability of a person to withstand hardship or of a material to resist fracture when stressed. Often used to describe psychological resilience or physical durability.
The athlete showed great mental toughness during the final race.
Engineers test the toughness of the new alloy by subjecting it to repeated high-impact collisions.
While physical strength is necessary for the climb, it is the mental toughness of the mountaineers that determines whether they can endure the oxygen-depleted environment of the summit.
From Middle English toughnesse, towghnesse, towghenesse, equivalent to tough + -ness.
Uncountable in its abstract sense; can be modified by adjectives like 'mental', 'physical', or 'structural'.