UNESSEN'TIAL, adjective 1. Not essential; not absolutely necessary; not of prime importance. 2. Not constituting the essence. 3. Void of real being; as unessential night. UNESSEN'TIAL, noun Something not constituting essence, or not of absolute necessity. Forms are among the unessentials of religion.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI