Essential
Essential adjective - Impossible to do without.
First-string and essential are semantically related. In some cases you can use "First-string" instead an adjective "Essential".
First-string
First-string adjective - Of the very best kind.
Essential and first-string are semantically related. Sometimes you can use "Essential" instead an adjective phrase "First-string".
Cite this Source
First-string and Essential. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/essential/first-string
Essential & First-string. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/essential/first-string>.
First-string or Essential. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/essential/first-string.