optimism
US /ˈɑːp.tə.mɪ.zəm/
UK /ˈɑːp.tə.mɪ.zəm/

1.
乐观
hopefulness and confidence about the future or the success of something
:
•
Despite the challenges, she maintained her optimism.
尽管面临挑战,她仍然保持着乐观。
•
His optimism is contagious and inspires everyone around him.
他的乐观具有感染力,激励着他周围的每一个人。