Deteriorate/dɪˈtɪriəreɪt/ Definition 1 of 2Pro Tip 1/3Gradual Decline Use 'deteriorate' when something gradually gets worse over time, rather than suddenly. His handwriting deteriorated as he grew older. Pro Tip 2/3Negative Connotation The word 'deteriorate' carries a negative meaning, implying a downward trend or decay. Public trust in the government has deteriorated. Pro Tip 3/3Without Cause Use 'deteriorate' when explaining that something is getting worse without stating the cause. The ancient ruins are deteriorating with time.