Who has the biggest vocabulary in Dragon Ball?

It's difficult to definitively say who has the "biggest vocabulary" in Dragon Ball, as the characters' dialogue and writing styles are often influenced by the context of the story and the intended audience. However, we can consider some factors that might contribute to a larger vocabulary:

* Age and Experience: Characters who have lived longer and experienced more are likely to have a wider range of knowledge and vocabulary. Goku, Vegeta, and Piccolo are all older and have encountered many different cultures and situations throughout their lives.

* Education and Intellectualism: While not always a factor in Dragon Ball, characters who are more intellectual or have received formal education could potentially possess a larger vocabulary. Bulma, as a scientist, is a good example.

* Language Usage: Characters who are more eloquent and use complex sentence structures might be considered to have a larger vocabulary, even if their actual word count is not necessarily higher. This could be applied to characters like Whis, who speak in a more refined and nuanced manner.

Ultimately, it's subjective. There is no official measure of vocabulary size in Dragon Ball. However, based on their actions, experiences, and speaking patterns, characters like Goku, Vegeta, Piccolo, and Bulma could be considered to have a strong grasp of language and potentially a larger vocabulary compared to some of the other characters.