sanguineness
/'sæŋɡwɪnnes/feeling sanguine; optimistically cheerful and confident
noun [抽象名词] 红润
His sanguineness about the project's success was contagious, and soon the whole team was filled with hope. 他对项目成功的乐观态度感染了所有人，很快整个团队都充满了希望。
后缀: ness
【noun】 表示状态或质量的性质 - indicating the state or quality of
原词: sanguineness
是通过后缀 【ness】 构成的派生词
