/dɪˈtɪə.ri.ə.reɪt/to become worse trở nên xấu hơn; xuống cấp; ngày càng xấu hơn
deterioration
Mr Johnson originally went into St Thomas' hospital in central London on Sunday for tests, he said in a tweet.
He was transferred to the intensive care unit of the hospital on Monday evening after his condition deteriorated.
She was taken into hospital last week when her condition suddenly deteriorated.
The political situation in the region has deteriorated rapidly.
Sym: degenerate = /dɪˈdʒen.ə.reɪt/ to become worse in quality:
Educational standards are degenerating year by year because of a lack of funds.
What was intended as a peaceful demonstration rapidly degenerated into violence?