Macmillan Dictionary

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To become worse

worsen

verb

to become worse, or to make something worse

decline

verb

to become less or worse

deteriorate

verb

to become worse

deepen

verb

if a bad situation deepens, it becomes worse

escalate

verb

to become much worse or more serious, or to make something do this

degenerate

verb

to become worse

spiral

verb

to continuously become worse, more, or less

slide

verb

to gradually be in a worse situation than before

go down

to become worse

come to the boil

if a situation or feeling comes to the boil, it starts to become more serious or dangerous

charticle

a news article that consists of a chart … and only has a small amount of text

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an event that should never occur in a healthcare setting …

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