This is a list of bearish option strategies:
- Bear Call Spread (also Short Call Spread, Credit Call Spread)
- Bear Put Spread (also Long Put Spread, Debit Put Spread)
- Covered Put
- Long Call Synthetic Straddle (also Synthetic Straddle)
- Long Call Synthetic Strangle (also Synthetic Strangle)
- Long Put
- Long Put Synthetic Strangle
- Protective Call (also Married Call)
- Short Call (also Naked Call, Uncovered Call)
- Short Combo
- Short Put Synthetic Straddle
- Synthetic Covered Put
- Synthetic Long Put (also Synthetic Put)
- Synthetic Short Call
- Synthetic Short Stock (also Synthetic Short)
An option strategy is said to be bearish when it profits when underlying price goes down and (usually) loses when it goes up. In option Greeks talk, it is a strategy which tends to have negative delta.
See also a list of bullish option strategies (profit when underlying goes up), long volatility strategies (profit when underlying makes a big move to either direction), and non-directional strategies (profit when underlying price doesn't move much).