Stiff joint is a common health issue faced by many people, especially the elderly. It is a condition where a joint becomes rigid and difficult to move due to various reasons like injury, arthritis, or underlying medical conditions. In medical terminology, stiff joints are referred to as arthralgia. However, there are several other synonyms for the word stiff joint, such as joint stiffness, limited joint mobility, restricted joint movement, joint inflexibility, joint tightness, immobile joint, and joint rigidity. Regardless of the terminology used, it is crucial to seek medical attention for the timely diagnosis of the underlying cause and effective treatment to prevent the condition from worsening.