1. toughness(n = noun.attribute) stamina, staying power - enduring strength and energy;
is a kind of endurance
has particulars: legs
2. toughness(n = noun.attribute) huskiness, ruggedness - the property of being big and strong;
is a kind of strength
3. toughness(n = noun.attribute) temper - the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking;
is a kind of elasticity, snap
4. toughness(n = noun.attribute) formidability - impressive difficulty;
is a kind of difficultness, difficulty
Derived forms adjective tough9, adjective tough2, adjective tough7
The quality or state of being tough. [1913 Webster]
N coherence, adherence, adhesion, adhesiveness, concretion accretion, conglutination, agglutination, agglomeration, aggregation, consolidation, set, cementation, sticking, soldering, connection, dependence, tenacity, toughness, stickiness, inseparability, inseparableness, bur, remora, conglomerate, concrete, cohesive, adhesive, adhering, cohering, tenacious, tough, sticky, united, unseparated, unsessile, inseparable, inextricable, infrangible, compact.
N tenacity, toughness, strength, (cohesion), grip, grasp, stickiness, (cohesion), sequacity, stubbornness (obstinacy), glue, cement, glutinousness, sequaciousness, viscidity, (semiliquidity), leather, white leather, whitleather, gristle, cartilage, unbreakability, tensile strength, tenacious, tough, strong, resisting, sequacious, stringy, gristly cartilaginous, leathery, coriaceous, tough as whitleather, stubborn, unbreakable, indivisible, atomic.