Essential
Essential adjective - Impossible to do without.
Of concern and essential are semantically related. In some cases you can use "Of concern" instead an adjective "Essential".
Of concern
Essential and of concern are semantically related. You can use "Essential" instead an adjective phrase "Of concern".
Both terms in one sentence
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By the end of the book, however, Richard sees his characteristic warmth and kindness as a mask for his essential lack of concern for his students or insight into their lives.
Source: Broken Pedestal
Cite this Source
Of concern and Essential. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/essential/of_concern
Essential & Of concern. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/essential/of_concern>.
Of concern or Essential. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/essential/of_concern.
Google Ngram Viewer shows how "essential" and "of concern" have occurred on timeline