Definition of top dog
: a person, group, or thing in a position of authority especially through victory in a hard-fought competition
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Recent Examples of top dog from the Web
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Allen continues to be the top dog after winning another state football title.
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The Labrador Retriever may still be the most popular breed in America but in and around Miami, the top dog is the German Shepherd.
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Dowd views diGenova as pushing him to be the second chair rather than top dog on Trump's legal team, these people said.
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Until then, the Toyota Prius engine was considered top dog with a thermal efficiency of ~40 percent.
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The versatile, sociable Lab has had the longest-ever reign as top dog.
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The versatile, sociable Lab has had the longest-ever reign as top dog.
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Idaho’s capital city was top dog in a 100-city ranking of dog parks by The Trust for Public Land’s Center for City Park Excellence.
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Sears was once the top dog in selling refrigerators, washing machines, and other home appliances, but has since lost its footing over recent years.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'top dog.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of top dog
1900
TOP DOG Defined for English Language Learners
top dog
Definition of top dog for English Language Learners
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: a person or group that has the most power or success
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