Instant and Quickest

Instant

Instant adjective - Done or occurring without any noticeable lapse in time.

Quickest and instant are semantically related. In some cases you can replace term "Quickest" with "Instant", this adjectives are similar.

Quickest

Quickest adverb - Most quickly.

Instant and quickest are semantically related. Sometimes you can use "Instant" instead an adjective "Quickest".
Cite this Source
Quickest and Instant. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/instant/quickest
Instant & Quickest. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/instant/quickest>.
Quickest or Instant. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/instant/quickest.
Google Ngram Viewer shows how "instant" and "quickest" have occurred on timeline