1. (noun) stamina, staying power, toughness
enduring strength and energy
Synonyms: huskiness, staying power, ruggedness, toughness, stamina, temper, formidability
2. (noun) huskiness, ruggedness, toughness
the property of being big and strong
Synonyms: temper, gruffness, hardness, staying power, formidability, ruggedness, toughness, stamina, hoarseness, huskiness
3. (noun) temper, toughness
the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking
Synonyms: ruggedness, huskiness, irritability, surliness, biliousness, mood, stamina, peevishness, pique, humor, pettishness, staying power, temper, irritation, humour, formidability, snappishness, toughness
4. (noun) formidability, toughness
impressive difficulty
Synonyms: huskiness, staying power, ruggedness, toughness, stamina, temper, formidability
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Synonyms for toughness 
