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Noun: toughness  túf-nus
  1. Enduring strength and energy
    "lacking in toughness";
    - stamina, staying power, stickability [informal]
  2. The property of being big and strong
    - huskiness, ruggedness
  3. The elasticity and hardness of a metal object; its ability to absorb considerable energy before cracking
    - temper
  4. Impressive difficulty
    - formidability

Type of: difficultness, difficulty, elasticity, endurance, fix [informal], hole [informal], jam [informal], kettle of fish [informal], mess [informal], muddle [informal], pickle [informal], snap, strength

Encyclopedia: Toughness