from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Slang Amorous or loving, often humorously so: made goo-goo eyes at her.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A Philippine person.
- n. A government reformer
from the GNU version of the Collaborative International Dictionary of English
- n. same as goody-goody, n..
Perhaps alteration of goggle.(American Heritage® Dictionary of the English Language, Fourth Edition)
Possibly from the Tagalog gugus, "tutelary spirit." Adapted as an ethnic slur by American troops during the Filipino-American War. (Wiktionary)
From good government (Wiktionary)