exemplar

Etymology 1

From Latin exemplar, from Latin exemplum. Doublet of exemplary.

noun

1. Something fit to be imitated; an ideal, a model.
   A ray of light amid all this nonsense was Gwyn Topham's piece in the Guardian, which was timely, measured, accurate and of appropriate tone. That this single report stood out so clearly as an exemplar is a scathing comment in itself on the volumes of drivel surrounding it. August 26 2020, Nigel Harris, “Comment Special: Catastrophe at Carmont”, in Rail, page 4
2. A role model.
3. Something typical or representative of a class; an example that typifies.
4. A pattern after which others should be made; an archetype.
5. A well known usage of a scientific theory.
6. A handwritten manuscript used by a scribe to make a handwritten copy; the original copy of what gets multiply reproduced in a copy machine.
7. A copy of a book or piece of writing.
   To amend the same [default] according to the true exemplars. 1539, Richard Taverner, “Preface”, in Taverner's Bible

Etymology 2

From French exemplaire, and its source, Latin exemplāris.

adj

1. (obsolete) Exemplary.