Nonce
Onetime
Onetime adjective - Happening only once.
Usage example: with any luck, that was a onetime mistake
Cite this Source
Onetime and Nonce. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/nonce/onetime
Nonce & Onetime. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/nonce/onetime>.
Onetime or Nonce. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/nonce/onetime.
Google Ngram Viewer shows how "nonce" and "onetime" have occurred on timeline