the state of being strong enough to withstand adverse conditions or rough handling
the toughness of steel
the ability to deal with hardship or to cope in difficult situations
they showed great mental toughness to keep going
he lacks toughness and resolve
demonstration of a strict and uncompromising approach
the toughness of the regime was legendary
declarations of toughness on crime
the quality of being strong and prone to violence
his reputation for toughness on the street
they were known to file their teeth to show their toughness