know your stuff
also UK old-fashioned know your onions informalC2 to have good practical skills and knowledge in a particular activity or subject
Thesaurus: synonyms and related words
Skill, talent and ability
- a magic touch idiom
- ability
- accomplishment
- accuracy
- acumen
- capability
- command
- dash
- ear
- effortless
- expertise
- facility
- faculty
- finesse
- nose
- polish
- proficient
- prowess
- pyrotechnics
- qualification
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