Source : Webster's Revised Unabridged Dictionary (1913)

Repetitious \Rep`e*ti"tious\ (-t?sh"?s), a.
   Repeating; containing repetition. [U.S.] --Dr. T. Dwight.

Source : WordNet®

repetitious
     adj : marked by tedious repetition [syn: {iterative}, {reiterative},
            {repetitive}]