optimism

noun

Etymology: From French optimisme, equivalent to Latin optimus + -ism.

1. a tendency to expect the best, or at least, a favourable outcome

   “I love her youth, her beauty and above all her optimism that everything will turn out fine.”

   “Hanks is known as being an avid reader of history and biography, and seems to seek out stories which offer a certain optimism and humanism. In other words, he plays – fundamentally – good people.”

2. the doctrine that this world is the best of all possible worlds
3. the belief that good will eventually triumph over evil