ONE INTERESTING WORD, EVERY DAY.AN EDITION FOR THE CURIOUS
FROM THE ARCHIVEFriday, October 16, 2026

quiddity

KWID-i-tee/ˈkwɪdɪti//noun
01 / MEANING

The essential nature of a thing: the quality that makes it what it is.

In a sentence.

  1. 01

    The chef argued that simplicity was the quiddity of the dish.

  2. 02

    Her sketch caught the quiddity of the old harbor.

Where it came from.

Quiddity came through French from Late Latin quidditās, formed from quid, ‘what,’ and a suffix meaning ‘-ness.’ Philosophers used it to ask what a thing is.

Explore the source

Why it’s interesting.

Its roots turn a large philosophical question into a small one: the ‘whatness’ of a thing.

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