What rhymes with doo?

babble (dibble and) dabble drabble gabble grabble rabble scabble Scrabble (Trademark)

near rhyme (spoken)

addle astraddle dog-/up the creek without a/ paddle fiddle-faddle in the/side-/ saddle packsaddle raddle skedaddle straddle unsaddle

jabble, gabble, maddle, Scabble, SnApple and rabble