If someone is very well-informed about something, they know their onions.
know (one's) onions
To be actual abreast or accomplished in some area. Primarily heard in UK, Australia. I anticipate Nicole is our best applicant for the job—when it comes to accumulated accounting, she absolutely knows her onions.Learn more: know, onion
know your onions
BRITISH, OLD-FASHIONEDIf you know your onions, you apperceive a lot about a accurate subject. She absolutely knows her onions in the actual field. Note: This may acquire from the balladry argot `onion rings', acceptation `things'. Learn more: know, onion
know your onions
be absolutely abreast about something. informalOnions is conceivably abbreviate for balladry argot onion rings , acceptation ‘things’. The byword dates from the 1920s.Learn more: know, onionLearn more:
An know your onions idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with know your onions, allowing users to choose the best word for their specific context.
類似の言葉の辞書、別の表現、同義語、イディオム イディオム know your onions