What is the longest adjective in English?

The longest adjective in English is "floccinaucinihilipilification". It's 29 letters long and means "the act of estimating something as worthless".

While technically correct, it's a bit of a niche word and not commonly used.

For a more practical answer, some other contenders for long adjectives include:

* "antidisestablishmentarianism" (28 letters) - opposition to the separation of church and state

* "incomprehensibilities" (18 letters) - the state of being impossible to understand

* "unintelligibility" (17 letters) - the state of being unintelligible

Let me know if you'd like to explore other long words in English!