Walter Mitty
Concise Oxford English Dictionary © 2008 Oxford University Press:
Walter Mitty/wɔːltə(r)ˈmɪti/
▶noun a person who fantasizes about a life much more exciting and glamorous than their own.
– origin the fantasizing hero of James Thurber's short story The Secret Life of Walter Mitty (1939).
'Walter Mitty' also found in these Oxford entries:

