## AI Etymology
Fluff is probably an alteration of earlier flue ('fluff, down'), perhaps influenced by puff, attested from the 18th century and partly imitative. The history is deliberately cautious: the proposed comparison is useful for orientation, but the wording leaves room for uncertainty rather than forcing a false certainty. In present use, it is used as a noun and verb meaning "soft light downy material; trivial or inconsequential content", so the historical material remains connected with the current sense rather than standing as bare ancestry. The wider English family includes derivatives such as fluffy, fluffer, and fluffiness, showing how the same historical material continues to organize neighboring vocabulary. Its semantic neighborhood is marked by down, fuzz, lint, and nap on one side and contrasts such as substance on the other, locating the modern specialization without adding a new origin story.

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