Definition of jim-dandy in English:

jim-dandy

adjective

North american
informal
  • Fine, outstanding, or excellent.

    • ‘It makes jim-dandy sense that Kureishi is so acclaimed.’
    • ‘This is a jim-dandy illusion, and it's still available.’
    • ‘No, no, no, I'm not saying that theistic beliefs are a prerequisite for coming up with a jim-dandy moral code.’
    excellent, wonderful, marvellous, magnificent, superb, splendid, glorious, sublime, lovely, delightful, first-class, first-rate, outstanding
    View synonyms

noun

North american
informal
  • An excellent or notable person or thing.

    • ‘He must have been a jim-dandy of a boy.’

Origin

Late 19th century: from the given name Jim (nickname for James) + dandy.

Pronunciation:

jim-dandy

/ˌjim ˈdandē/