The adjective exemplary means someone or something that is extremely good and suitable to be copied by other people.
Synonyms are admirable, commendable, estimable, or excellent.
The word origins from Middle French (1580s) exemplaire meaning “fit to be an example” and Late Latin exemplaris meaning “that serves as an example, pattern, or motto”, from exemplum meaning “example, pattern, model”. It is from Late Latin (early 15th Century) exemplarium meaning “a model of conduct”.
Their answer was often exemplary, with mature responses to challenging questions.
The prizes provided for the winners were all exemplary.
His research was exemplary, and his references are always exact.