RichThesaurus
doo
vs
doo-doo
doo
noun
feces, particularly that of a dog.
intj
Used as a scat word in singing.
doo-doo
noun
Excrement.
Difficulty; trouble.
How often have the words
doo
and
doo-doo
occurred in a corpus of books?
(source:
Google Ngram Viewer
)