Meaning Of The Word Know one's onions

Real Dictionary

What's the definition of Know one's onions? Find Know one's onions meanings, definitions and more at the Real Dictionary online.

Know one's onions Meaning

Know one's onions Definition
Know one's onions Definition

What's The Definition Of Know one's onions?

know one's onions in British English
to be fully acquainted with a subject
to know one's subject or business thoroughly; be capable or proficient

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