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know one's onions

see definition of know one's onions
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Synonyms for know one's onions

adj able to perform well; having a proven capacity
  • capable
  • effective
  • efficient
  • intelligent
  • keen
  • prepared
  • responsible
  • skilled
  • smart
  • accomplished
  • adroit
  • agile
  • artful
  • au fait
  • brilliant
  • clever
  • deft
  • dexterous
  • effectual
  • equal to
  • experienced
  • expert
  • facile
  • gifted
  • ingenious
  • know backwards and forwards
  • know one's onions
  • know the ropes
  • learned
  • masterful
  • masterly
  • powerful
  • practiced
  • proficient
  • qualified
  • savvy
  • sharp
  • skillful
  • talented
  • there
  • trained
  • up to it
  • up to snuff
  • up to speed
  • with it

Antonyms for know one's onions

  • dull
  • idiotic
  • ignorant
  • impotent
  • incapable
  • incompetent
  • ineffective
  • stupid
  • unable
  • unintelligent
  • weak
  • delicate
  • feeble
  • inept
  • infirm
  • powerless
  • useless
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.