Antonyms for Erythrocyte Sedimentation Rates (ESR) can include acceleration, rapidness, and swift movement. ESR is a measure of how quickly red blood cells settle in a test tube, which can indicate inflammation or infection. However, to have a faster ESR would indicate potential health concerns, which is why antonyms for this term suggest a state of speedy activity. Other antonyms may include vitality, quickness, energy, and spark. While a high ESR can signal health issues, the antonyms for this term carry a positive connotation and suggest a state of vigor, liveliness, and vitality.