Crack on
Crack on verb - To proceed or move quickly.
Usage example: the postman cracked on in an effort to get the mail delivered on time
Fly
Fly verb - To proceed or move quickly.
Usage example: flew down the concourse to catch his flight
Mutual synonyms
Cite this Source
Fly and Crack on. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/crack_on/fly
Crack on & Fly. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/crack_on/fly>.
Fly or Crack on. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/crack_on/fly.
Google Ngram Viewer shows how "crack on" and "fly" have occurred on timeline