Rat on
Rat on verb - To give information (as to the authorities) about another's improper or unlawful activities.
Rat out
Mutual synonyms
Cite this Source
Rat out and Rat on. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/rat_on/rat_out
Rat on & Rat out. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/rat_on/rat_out>.
Rat out or Rat on. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/rat_on/rat_out.
Google Ngram Viewer shows how "rat on" and "rat out" have occurred on timeline