Optimism is a positive outlook on life and the belief that good things will happen. The crossword solutions for the term OPTIMISM include ENTHUSIASM (10 letters), EXHILARATION (12 letters), EXPECTATION (11 letters), ENCOURAGEMENT (13 letters), HOPEFULNESS (11 letters), HOPE (4 letters), and ROSINESS (8 letters). These words all describe different aspects of optimism, such as ENTHUSIASM for life, excitement, anticipation, support, and a sense of possibility. Rosiness is often used to describe a cheerful attitude and a bright outlook.