noun, plural goody two shoes. (sometimes initial capital letters)
1.
a goody-goody.
Origin
after the title character of The History of Little Goody Two-Shoes (1765), a nursery tale perhaps written by Oliver Goldsmith
Contemporary definitions for goody two shoes
noun
any person who will focuses on extreme good behavior in order to impress others, an extremely virtuous person; also called goody goody , also written goody-two-shoes