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Meaning of goody-goody

good•y-good•y

Pronunciation: (good'ē-good'ē), [key]
— n., pl. adj. -good•ies,
—n.
  1. a person who is self-righteously, affectedly, or cloyingly good.
—adj.
  1. self-righteously or cloyingly good; affecting goodness.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.