Definition of deteriorate
- Exposure to sunlight may deteriorate the paint.
efforts to save a deteriorating rain forest
Exposure to rain and sun will gradually deteriorate the paint.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'deteriorate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
: to become worse as time passes
: to make (something) worse
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