What is the Hindi meaning of floccinaucinihilipilification?

There is no direct Hindi translation for "floccinaucinihilipilification" because it's a very obscure and humorous word. It means "the act of estimating something as worthless."

However, you could use a phrase that conveys the same meaning in Hindi, like:

* कुछ भी नहीं समझना (kuchh bhi nahin samjhana) - meaning "to think of something as nothing"

* बेकार समझना (bekār samjhanā) - meaning "to consider something useless"

* तुच्छ समझना (tuchch samjhanā) - meaning "to think of something as insignificant"

Ultimately, the best translation would depend on the specific context in which you're using the word.