Instant
Instant adjective - Done or occurring without any noticeable lapse in time.
Usage example: an instant response to the cry for help
Quick is a synonym for instant in immediate topic. In some cases you can use "Quick" instead the word "Instant" as an adjective or a noun, when it comes to topics like timely, prompt.
Quick
Quick adjective - Having or showing the ability to respond without delay or hesitation.
Usage example: she's a quick wit, always ready with a pun or joke when the moment calls for one
Instant is a synonym for quick in time topic. You can use "Instant" instead the word "Quick" as an adjective or a noun, if it concerns topics such as timely, prompt, immediate, sudden.
Mutual synonyms
Both words in one sentence
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Also, many quick/instant skills can immobilize a target.
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In the second half of Tales of Legendia, the majority of the non-monster bosses are shadow versions of your party members who can use all of their respective artes, but have the added benefits of flinch resistance, and in the case of the magic users, quick or instant casting on their spells.
Source: Mirror Boss -
Instant Sedation: "I Wanna Be Sedated", where the protagonist wants to immediate and quick sedation.
Source: Music / Road To Ruin
Cite this Source
Quick and Instant. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/instant/quick
Instant & Quick. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/instant/quick>.
Quick or Instant. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/instant/quick.
Google Ngram Viewer shows how "instant" and "quick" have occurred on timeline