goody-goody

[ goo d-ee-goo d-ee ]

/ ˈgʊd iˈgʊd i /

a person who is self-righteously, affectedly, or cloyingly good.

self-righteously or cloyingly good; affecting goodness.

Origin of goody-goody

First recorded in 1870–75; reduplication of goody²

Obama and the goody-goody Democrats desperately want to believe the Republicans are capable of a compromise on health care.

Sept. 15: D-Day for Health Care |Paul Begala |August 20, 2009 |DAILY BEAST
All this seems amusing to the young man; what sappy and goody-goody fashions those were.

Studies in Medival Life and Literature |Edward Tompkins McLaughlin
"Well, I wish the Gulls wouldn't scream, 'Goody-goody' at us," said the brother.

Among the Pond People |Clara Dillingham Pierson
You with a boy three or four years old, posing around as a goody-goody bachelor.

The Jack-Knife Man |Ellis Parker Butler

Now, I reckon you know I ain't one of these goody-goody sports.

Motor Matt; or, The King of the Wheel |Stanley R. Matthews
The goody-goody little soul of her put its hands about the little weakness of her and held it tight.

Once Aboard The Lugger |Arthur Stuart-Menteth Hutchinson

goody-goody

a smugly virtuous or sanctimonious person

smug and sanctimonious