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optimism

op·ti·mism [ óptə mìzzəm ]


noun 
Definition:
 
1. tendency to expect best: the tendency to believe, expect, or hope that things will turn out well

2. confidence: the attitude of somebody who feels positive or confident

3. philosophy doctrine that our world is best: a philosophical doctrine, first proposed by Leibnitz, that ours is the best of all possible worlds

4. philosophy belief in power of good: the belief that things are continually getting better and that good will ultimately triumph over evil

[Mid-18th century. < French optimisme< Latin optimum (see optimum)]
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