jim-dandy I. \ˈjimˈ ̷ ̷ ̷ ̷\noun Etymology:Jim (nickname for James) + dandy : something fine or wonderful of its kind < the bicycle he got as a gift was a jim-dandy > II. \ˈ ̷ ̷| ̷ ̷ ̷ ̷\adjective : fine or wonderful of its kind < had a jim-dandy voice > < a jim-dandy invention >