Definition of duck soup in English:

duck soup

noun

mass nouninformalNorth American
  • An easy task, or someone easy to overcome.

    ‘we had some great battles, but against me he was duck soup’
    simple, not difficult, straightforward, clear, accessible, direct, undemanding, unexacting, unchallenging, unsophisticated, trouble-free, painless, effortless, easy, facile, elementary, idiot-proof, plain sailing, a five-finger exercise, nothing

Pronunciation

duck soup