know one's onions

English

Pronunciation
  • Audio (AU)(file)

Verb

know one's onions (third-person singular simple present knows one's onions, present participle knowing one's onions, simple past knew one's onions, past participle known one's onions)

  1. (idiomatic) To be knowledgeable about, and competent at, a particular subject or task.

Synonyms

References
This article is issued from Wiktionary. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.