The upper side; the part that is uppermost.
- The upper side or portion.
- An advantageous aspect: the upsides and downsides of home ownership.
- An upward tendency, as in business profitability or in the prices of a stock.
- Slang On: "If you still didn't get it, well, sometimes you have to hit people upside the head ... to get their attention” ( Howie Carr).