Definition from Wiktionary, the free dictionary
See also Optimist
optimist (plural optimists)
- A person who expects a favourable outcome.
- A believer in optimism.
- A small centre-board sailing dinghy designed to train and introduce young children into sailing.
Derived terms 
Related terms 
a person who expects a favourable outcome
a believer in optimism
a small centre-board sailing dinghy
- optimist (A person who expects a favorable outcome or a believer in optimism)