RichThesaurus
coadjuvant
vs
in cahoots
coadjuvant
adj
cooperating
noun
An adjuvant.
in cahoots
adj
collaborating (with)
colluding or conspiring together secretly
How often have the words
coadjuvant
and
in cahoots
occurred in a corpus of books?
(source:
Google Ngram Viewer
)