In the following exercise, I'm asked to choose between 「どんどん」,「だんだん」 or 「ぞんぞん」to complete the sentence:
遠慮【えんりょ】しないで、____ 食【た】べてください。 Do not hesitate, eat ____ (adverb) please.
I think that neither どんどん (rapidly, steadily) nor だんだん (gradually) fit well in this sentence, do they? Therefore, I think that the correct choice is ぞんぞん. However, I can't find a proper definition for ぞんぞん in English. I found an article where they talk about ぞんぞん, tried to read it but the required level is way too high for me that I couldn't.
To sum up,
- What does ぞんぞん mean?
- Is ぞんぞん the right answer of the exercise?