Decompensation is a term used to describe a deterioration in mental, physical, or emotional health. Synonyms for this term include breakdown, collapse, failure, deterioration, decline, regression, relapse, downturn, and weakening. Breakdown indicates a sudden collapse or malfunction, while deterioration suggests a progressive decline over time. Collapse, on the other hand, denotes a sudden loss of function or strength. Regression means a returning to a less advanced state, while relapse implies a return to a previous state of illness after a period of recovery. A downturn indicates a decrease in strength or vitality, while weakening implies a loss of strength or vigor over time. In summary, the synonyms for decompensation give a sense of the gradual or sudden decline in mental or physical health.