Pronunciation: /ˈpiː.tər aʊt/
verb to gradually become smaller, weaker, or less active before coming to an end
A1 The rain started to peter out as we reached the end of our hike.
A2 The conversation petered out as everyone ran out of things to say.
B1 The party slowly petered out as guests began to leave one by one.
B2 The company's profits began to peter out after several years of steady growth.
C1 The initial excitement of the project petered out as challenges arose.
C2 The enthusiasm for the new product eventually petered out as competitors entered the market.
formal The project began with great enthusiasm but eventually petered out due to lack of funding.
informal I was really into that TV show, but it started to peter out in the last few seasons.
slang The party was going strong but then it just petered out and everyone went home.
figurative His interest in the new hobby seemed to peter out as quickly as it began.
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