toughness   (TTS Sound)

The noun toughness has 4 senses

• stamina, staying power, toughness -- (enduring strength and energy)


• huskiness, ruggedness, toughness -- (the property of being big and strong)


• temper, toughness -- (the elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking)


• formidability, toughness -- (impressive difficulty)