— Pollyannaism , n.
/pol'ee an"euh/ , n.
1. an excessively or blindly optimistic person.
adj.
2. ( often l.c. ) Also, Pollyannaish . unreasonably or illogically optimistic: some pollyanna notions about world peace.
[ from the name of the child heroine created by Eleanor Porter (1868-1920), American writer ]