1. to decrease or diminish the level of hopefulness, confidence, or positive outlook about future outcomes
Recent economic data has helped reduce optimism about market growth.
Os dados econômicos recentes ajudaram a reduzir o otimismo sobre o crescimento do mercado.
2. to make someone less confident or hopeful about a situation
Bad news tends to reduce optimism among investors.
As más notícias tendem a reduzir o otimismo entre os investidores.