We found 9 dictionaries that define the word gee-whiz:

General (8 matching dictionaries)

1. gee-whiz: Merriam-Webster
2. gee-whiz: Oxford Learner's Dictionaries
3. gee-whiz: American Heritage Dictionary of the English Language
4. gee-whiz, gee-whiz: Collins English Dictionary
5. gee-whiz: Wordnik
6. gee-whiz: Cambridge Advanced Learner's Dictionary
7. gee-whiz: Dictionary.com
8. gee-whiz: TheFreeDictionary.com

Slang (1 matching dictionary)

9. gee-whiz: Green’s Dictionary of Slang

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