Fast and Pronto

Fast

Fast adverb - With great speed.
Usage example: run as fast as you can to get help

Pronto is a synonym for fast in speedy topic. In some cases you can use "Pronto" instead the word "Fast" as an adverb or an adjective, when it comes to topics like speedily.

Nearby Words: fasted, fasting

Pronto

Pronto adverb - With great speed.
Usage example: if they don't arrive pronto, we'll have to go to the movie without them

Fast is a synonym for pronto in immediately topic. You can use "Fast" instead the word "Pronto" as an adverb or an adjective.

Both words in one sentence

Cite this Source
Pronto and Fast. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fast/pronto
Fast & Pronto. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fast/pronto>.
Pronto or Fast. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fast/pronto.
Google Ngram Viewer shows how "fast" and "pronto" have occurred on timeline