The word 'peakish' means tired, unwell, or somewhat sickly. Some synonyms of peakish include "languid", "pale", "peaky", "puny", "run-down", "sapped", "sickly", "weakened", "wilted", and "worn-out". These words indicate a loss of energy and strength, and a state of being unwell. If someone describes themselves as feeling peakish, it means that they are not at their best and might need rest or medical attention. Using synonyms for peakish can help to describe a situation or person's state of health and help us to better understand their needs.