unextravagating, adj. meanings, etymology and more | Oxford English . . . unextravagating is formed within English, by derivation Etymons: un- prefix1, extravagate v , ‑ing suffix2 What is the earliest known use of the adjective unextravagating? The earliest known use of the adjective unextravagating is in the 1860s OED's only evidence for unextravagating is from 1865, in the writing of John Grote, philosopher