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

1.
optimisme
hopefulness and confidence about the future or the success of something
:
•
Despite the challenges, she maintained her optimism.
Malgré les défis, elle a maintenu son optimisme.
•
His optimism is contagious and inspires everyone around him.
Son optimisme est contagieux et inspire tout le monde autour de lui.