1. The quality or state of being stiff; lack of flexibility or movement
The stiffness in his neck made it difficult to turn his head.
A rigidez no pescoço dele dificultava virar a cabeça.
2. Difficulty in moving or bending due to pain, cold, or lack of use
After the workout, she felt muscle stiffness in her legs.
Após o treino, ela sentiu rigidez muscular nas pernas.
3. Formal, unfriendly, or awkward manner or behavior
There was a stiffness in his greeting that suggested displeasure.
Havia uma formalidade na saudação dele que sugeria desaprovação.
4. The quality of being firm or resistant to bending
The stiffness of the fabric made it suitable for structured garments.
A rigidez do tecido o tornou adequado para peças estruturadas.