know one's stuff
English
editVerb
editknow one's stuff (third-person singular simple present knows one's stuff, present participle knowing one's stuff, simple past knew one's stuff, past participle known one's stuff)
- (intransitive, informal) To be knowledgeable about and competent at a particular subject or task.
- Joe really knows his stuff when it comes to baseball.
- 2020, Emmet Sweeney, The Theban Empire, volume 3, page 176:
- The field of knowledge in which Hori claimed to be an authority was Palestinology. The contents of the missive show that Hori certainly knew his stuff.
Synonyms
editAntonyms
editTranslations
editbe generally experienced and knowledgeable
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knowledgeable in a particular field
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Further reading
edit- “know one's stuff”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.