Fleetly
Fleetly adverb - With great speed.
Usage example: horses galloping fleetly across the plain
Pronto and fleetly are semantically related. in fast topic. In some cases you can use "Pronto" instead an adverb "Fleetly", when it comes to topics like immediately, speedily, in the near future, very quickly.
Pronto
Pronto adverb - With great speed.
Usage example: if they don't arrive pronto, we'll have to go to the movie without them
Mutual synonyms
Cite this Source
Pronto and Fleetly. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/fleetly/pronto
Fleetly & Pronto. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/fleetly/pronto>.
Pronto or Fleetly. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/fleetly/pronto.
Google Ngram Viewer shows how "fleetly" and "pronto" have occurred on timeline