RichThesaurus
dob in
vs
stab in the back
dob in
verb
To betray someone by informing on them.
stab in the back
verb
To betray (somebody).
noun
An act of betrayal or treachery
How often have the words
dob in
and
stab in the back
occurred in a corpus of books?
(source:
Google Ngram Viewer
)