The word is floccinaucinihilipilification... Meaning: the action or habit of estimating something as worthless.

Hmmmmmm

The longest word in the dictionary. I heard it first in my year one in the university

Useless word. I doubt people use it.
One thing I like about whites though, they've a word for everything. They even update their dictionary definitions to suit upcoming words like bling-bling, LOL and fubar. I know no Nigerian language with updates going past colonization-era.

pneumonoultramicroscopicsilicovolcanoconiosis