candide
/kænˈdiːd/ or /kænˈdiːt/ or /kænˈdiːdɪ/Definitions
1. adjective
optimistically and ideally trusting in the best; naively confident
“He was a very candide person, always expecting the best from people.”
2. noun
a person who is naively optimistic and trusting
“He was a perfect example of a candide, always believing in the goodness of others.”