Pangloss
Concise Oxford English Dictionary © 2008 Oxford University Press:
Pangloss /ˈpaŋglɒs/
▶noun a person who is optimistic regardless of the circumstances.
– derivatives
Panglossian adjective.
Panglossian adjective.
– origin C19: from the name of the tutor and philosopher in Voltaire's Candide (1759).
'Pangloss' also found in these Oxford entries:

