Other forms: repetitiously
Something repetitious gets said or done over and over again in a similar way. If you play your favorite song on repeat during your party, your guests are likely to demand to hear something less repetitious.
The adjective repetitious is another way to say repetitive, and both words (along with repeat) share the Latin root repetere, "do or say again." A repetitious poem repeats the same words so many times that it becomes a little dull, and a repetitious argument is more likely to irritate your parents than convince them.