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Definition of: optimism
(op′tə·miz′əm) noun
1. The doctrine that everything is ordered for the best; also, the doctrine that the universe is constantly tending toward a better state.
2. Disposition to look on the bright side of things: opposed to pessimism. [<F optimisme <L optimus best]
—op′ti·mist noun
—op′ti·mis′tic or ·ti·cal adjective
—op′ti·mis′ti·cal·ly adverb
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