hardness

• Существительное, обозначающее качество или состояние твёрдости, либо физической (сопротивление давлению или деформации), либо метафорической (трудность, суровость или отсутствие мягкости).

A noun referring to the quality or state of being hard, either physically (resistance to pressure or deformation) or metaphorically (difficulty, severity, or lack of softness).

uncountable

1. Physical propertyB2formal

   The quality of being solid, firm, and resistant to pressure or scratching.

   Твёрдость

   • The hardness of diamond makes it ideal for cutting tools.
   • Geologists measure the hardness of minerals using the Mohs scale.
   • The hardness of the steel was tested before construction.

   Synonymsfirmnessrigiditysoliditystiffness

   Antonymsflexibilitymalleabilitypliabilitysoftnesstenderness

2. DifficultyB2formal

   The quality of being difficult to do, understand, or deal with.

   Сложность

   • The hardness of the exam surprised many students.
   • He complained about the hardness of the training program.
   • The hardness of the problem required advanced mathematics.

   Synonymsarduousnessdifficultylaboriousnessrigorousnessrigourtoughness

   Antonymseasefacilitysimplicity