Definition of goody-goody | Bee Dictionary of English

In every presidential election from 1968 through 1988, the Democrats nominated a goody-goody (Hubert Humphrey, George McGovern, Jimmy Carter, Walter Mondale, Michael Dukakis).
For whatever bright promises and goody-goody talks he may utter, we still consider him persona non grata .
Screen Cred: As honor student Hermione Granger in the Harry Potter series, the British actress believably delivers goody-goody lines like, "I'm going to bed before either of you .

'The To Do List' Red Band Trailer Is Actually Really Elegant (It's Not)
Aubrey Plaza is looking to experiment before she heads to college in the new NSFW trailer for the coming of age comedy "The To Do List," which debuted last night. The red band trailer dives deeper into the premise, which casts Plaza as the goody-goody straight-A student that fears heading to college without any sexual [...]
June 5, 2013 - MTV

Hilary Duff in Digital Spy
Duff told OK!: "I said something about how she didn't like her fans dressing like her, and how she should appreciate that because it's a compliment." "She called me a goody-goody. Everyone is trying to prove who they are, and their position....
Vanessa Hudgens in National Ledger
Though a rep for the actress tells Star Vanessa is "devastated," a source close to Hudgens says, "There are rumors she's fine with those photos ending up on the Internet because she wants to move away from her 'goody-goody' image."
Avril Lavigne in National Post
Lavigne replied, "Who the hell cares what she has to say about my fans? Hilary Duff's such a goody-goody, such a mommy's girl."

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