Being positive all the time. Recovers from anger or sadness very quickly or doesn't feel bad emotions at all. Usually very high spirited or loves to smile, you'll know 'em when you see them.
by AcetheSpade November 13, 2007
Feeling that a virtually impossible task is completely reasonable and can be done in an absurd timeframe for minimal resources.
I'm very opTimistic that we can complete a better DayZ clone in like a few months despite having absolutely no professional game development experience!
by BananananananananananaSandwich July 19, 2016