Ask Sarah for help because she really knows her shit.
know one's shit
idiomSynonym of know one's stuff, to be knowledgeable about a subject or task.
You should trust the new mechanic with your car because he clearly knows his shit.
Despite his casual demeanor, the lead developer knows his shit and can solve any technical problem that arises.
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abound in one's own sense
To follow one’s own inclinations and opinions.
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ace up one's sleeve
A surprise advantage of which others are not aware.
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act one's age
To behave in a manner appropriate to one's age.
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act one's age, not one's shoe size
Synonym of act one's age (“to behave in a mature manner; to avoid being childish”).
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afraid of one's own shadow
Exceptionally timid.
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air one's dirty laundry in public
To reveal one's sordid secrets to the public.
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air one's dirty linen in public
Synonym of air one's dirty laundry in public.
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albatross around one's neck
A characteristic, possession, associate, or previous deed that hinders one's ability to succeed.
Last updated July 12, 2026