Hi Guillermo  

Sorry this late,  I have been ill with Fallas. 

The topic for the next class will be on Fallas,  the excessive Ness of everything. The crowds,  the noise and the chaos...

In this particular case his usage is a "functional shift," a grammatical process where a word changes its part of speech—in this case, turning a common suffix into a standalone adjective or noun. In terms of vocabulary, this allows you to communicate a complex "vibe" or "essence" without needing a long string of traditional adjectives, effectively creating a linguistic shorthand that feels both modern and precise.

Here, "Ness" is being used to mean "the quality, state, or overwhelming nature of something"; essentially treating the suffix as a word in its own right.

"The excessive Ness of everything: the crowds, the noise and the chaos."

The speaker means: the overwhelming, all-encompassing quality that defines Fallas — its sheer intensity as an experience.

Why this works

  • Native speakers sometimes detach suffixes and use them independently for emphasis or stylistic effect
  • The capital "N" suggests it's being treated as almost a concept or label in itself
  • It's a way of saying "the sheer [adjective]-ness of it all" without specifying a single adjective, because no one word is enough
  • It's a clever choice here because Fallas is genuinely excessive in multiple ways at once

To summarize:

  • -ness is traditionally a suffix
  • But "Ness" can function as an informal standalone noun meaning the overwhelming essence or quality of something
  • This is a perfectly natural thing for a fluent native speaker to write