deterioration

noun

1. (countable, uncountable)The process of making or growing worse, or the state of having grown worse.

   “From 1945 onwards, deterioration in the condition of the brickwork in the arch soffits was kept under close observation, and in 1951 it was decided that strengthening must be undertaken.”

   “The Queen may be celebrating her jubilee but the Queen's English Society, which has railed against the misuse and deterioration of the English language, is to fold.”

   “"The quantum sensors will provide highly accurate measurements that will help to detect the rate of change of the track and subsequently, any deteriorations which might lead to faults."”

   “V-Dem lists the characteristics of autocratization as deteriorations in freedom of expression, the decline of free and fair elections, and the centralization of authority.”