Birr
Birr verb - Make a soft swishing sound.
Purr
Purr verb - Make a soft swishing sound.
Usage example: the car engine purred
Cite this Source
Purr and Birr. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/birr/purr
Birr & Purr. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/birr/purr>.
Purr or Birr. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/birr/purr.
Google Ngram Viewer shows how "birr" and "purr" have occurred on timeline