First off and Instant

First off

First off adverb - Before anything else.
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Synonyms for First off

Instant and first off are semantically related. In some cases you can use "Instant" instead an adverb phrase "First off".

Instant

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

First off and instant are semantically related. Sometimes you can use "First off" instead an adverb "Instant".

Cite this Source
Instant and First off. (2016). Retrieved 2026, July 27, from https://thesaurus.plus/related/first_off/instant
First off & Instant. N.p., 2016. Web. 27 Jul. 2026. <https://thesaurus.plus/related/first_off/instant>.
Instant or First off. 2016. Accessed July 27, 2026. https://thesaurus.plus/related/first_off/instant.
Google Ngram Viewer shows how "first off" and "instant" have occurred on timeline