Synonyms: toughness, formidability
Definition: impressive difficulty
Similar words: difficultness, difficulty
Definition: the quality of being difficult
Usage: they agreed about the difficulty of the climb
Definition: the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking
Similar words: snap, elasticity
Definition: the tendency of a body to return to its original shape after it has been stretched or compressed
Usage: the waistband had lost its snap
Synonyms: huskiness, toughness, ruggedness
Definition: the property of being big and strong
Similar words: strength
Definition: the property of being physically or mentally strong
Usage: fatigue sapped his strength
Synonyms: toughness, staying power, stamina
Definition: enduring strength and energy
Similar words: endurance
Definition: the power to withstand hardship or stress
Usage: the marathon tests a runner's endurance