Quickly
Quickly adverb - With great speed.
Usage example: quickly moved to block the goal
Suddenly is a synonym for quickly in immediately topic. In some cases you can use "Suddenly" instead the word "Quickly" as an adverb or an adjective, when it comes to topics like spontaneously.
Suddenly
Suddenly adverb - With great suddenness.
Usage example: the bus stopped suddenly, and somebody's lunch landed in the aisle
Quickly is a synonym for suddenly in spontaneously topic. You can use "Quickly" instead the word "Suddenly" as an adverb or an adjective, if it concerns topics such as unexpectedly.
Nearby Words: sudden, suddenness
Mutual synonyms
Related pairs
Both words in one sentence
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Sure, he's an evil bastard, but he's tried so many times to establish his Eggman Empire, coming quite close more than a few times, when suddenly and quickly all his hard work is washed away.
Source: Yank the Dog's Chain - In Red State, almost all the main characters die quickly and suddenly at various intervals in the plot.
Source: Anyone Can Die / Film -
Kurimu sits up quickly and suddenly has about eight sticking out of various spots on her head.
Cite this Source
Suddenly and Quickly. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/quickly/suddenly
Quickly & Suddenly. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/quickly/suddenly>.
Suddenly or Quickly. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/quickly/suddenly.
Google Ngram Viewer shows how "quickly" and "suddenly" have occurred on timeline