actual, settled, unchallenged, real, original, fixed, bona fide, established, without question, authentic, unquestionable, good, genuine, proved, unquestioned, true, undisputed, proven.
certain (part of speech: adjective)
We have to do with an insurrection, with an undoubted
- "Under a Charm, Vol. III. (of III) A Novel", E. Werner.
Besides, Roblez, though a man of undoubted
courage, of the coarse, animal kind, has, neverthless, a certain moral dread of his commanding officer, and fears to offend him.
- "The Lone Ranche", Captain Mayne Reid.
Our cause, then, must be intrusted to and conducted by its own undoubted
friends- those whose hands are free, whose hearts are in the work, who do care for the result.
- "The Great Events by Famous Historians, Vol. 17", Charles Francis Horne.