1. Cheated, conned, or scammed. A variant spelling of "snookered." Nearly 400,000 people ended up getting schnookered by the company, which stole almost $35 million in total. I couldn't help feeling like I'd been schnookered as I drove off the lot in the second-hand car.
2. slang Drunk. A variant spelling of "snookered." We spent the whole night getting schnookered on cheap vodka, so we had the worst hangovers of our lives the next morning. He was so schnookered he couldn't even say his own name properly.