know one's stuff
English edit
Verb edit
know 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 edit
Antonyms edit
Translations edit
be generally experienced and knowledgeable
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knowledgeable in a particular field
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knowledgeable in a specific situation
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Further reading edit
- “know one's stuff”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.