Synonyms of toughness

Noun

1. stamina, staying power, toughness, endurance

usage: enduring strength and energy

2. huskiness, ruggedness, toughness, strength

usage: the property of being big and strong

3. temper, toughness, elasticity, snap

usage: the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking

4. formidability, toughness, difficulty, difficultness

usage: impressive difficulty