Writhed is a powerful verb that evokes a sense of pain, discomfort, and agony. It means to twist, squirm, or contort one's body in a way that expresses physical or emotional distress. However, there are several other synonyms that writers can use to add depth and variety to their descriptions. Some of these include wriggled, convulsed, agonized, tormented, suffered, trembled, quivered, contracted, and spasm'd. Each of these words carries its own unique nuance, helping readers to better understand the exact nature of the character's pain or discomfort. Therefore, it is essential for writers to choose the appropriate synonym that best captures the intended emotion or physical experience.