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The weather worsened as the storm approached.
The weather became worse as the storm got closer.
to make or become worse in quality, condition, or degree
His health worsened after the surgery.
His health condition deteriorated after the surgery.
The situation worsened when the negotiations broke down.
The situation became more difficult when the negotiations failed.
Often used with 'the situation', 'conditions', or 'health'.
Use 'worsen' to describe a decline in quality or condition, often with nouns like 'situation', 'health', or 'conditions'.
From Middle English 'worsen', from 'worse' + '-en' (a suffix forming verbs).
Commonly used in both formal and informal contexts to describe negative changes.