inessential

From in- + essential.

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inessential (not comparable)

1. Not essential.

   Leave inessential items behind when there is a fire alarm.

2. Lacking essence or being.

• (not essential): unnecessary, unneeded, extrinsic
• (lacking essence or being): See also Thesaurus:inexistent
• (both senses): nonessential, unessential

• (antonym(s) of “not essential”): essential; See also Thesaurus:requisite
• (antonym(s) of “lacking essence or being”): extant, existent; See also Thesaurus:existent

inessential (plural inessentials)

1. (often in plural) Something that is not essential