What is the longest word in Filipino?

There's no single "longest word" in Filipino, as it depends on how you define "word" and how you count syllables or letters.

Here are a few factors to consider:

* Compound words: Filipino allows for long compound words formed by combining several words together. For example, "pang-araw-araw na pangangailangan" (daily needs) is a common and relatively long phrase.

* Technical terms: Specialized terms in science, medicine, or other fields can be quite long, like "kawalan ng katapatan sa sarili" (lack of self-honesty).

* Uncommon words: Some archaic or rarely used words might be very long.

Ultimately, it's difficult to definitively say which word is the longest in Filipino. It's more about the flexibility of the language to create long phrases and terms based on context and meaning.