Ratting Synonyms

To abandon one's cause or party usually to join another
(Verb)
Synonyms:
  1. tergiversating
  2. turning
  3. deserting
  4. defecting
  5. apostatizing
Take the place of work of someone on strike
(Verb)
Synonyms:
  1. finking
To furnish incriminating evidence to an officer of the law (usually in return for favors)
(Noun)
Synonyms:
  1. informing