duck soup 
noun [mass noun] North American informal
An easy task, or someone easy to overcome: we had some great battles, but against me he was duck soup
- signature tune
- signaturist
- sign behavior
- sign behaviour
- sign bit
- signboard
- sign design
- sign digit
- signed-rank test
- signed, sealed, and delivered (or signed and sealed)
- signee
- signer
- signet
- signet ring
- signet ring cell
- sign-event
- sign for
- signifer
- signifiable
- signifiant
- signific
- significacio
- significal
- significance
- significance level