Main entry: inessential, nonessential
Definition: anything that is not essential
Usage: they discarded all their inessentials
Antonyms: necessary, necessity, essential, requirement, requisite
Definition: anything indispensable
Main entry: incidental, nonessential
Definition: not of prime or central importance
Usage: nonessential to the integral meanings of poetry- Pubs.MLA
Antonyms: necessary, necessity, essential, requirement, requisite
Definition: anything indispensable
Antonyms: essential
Definition: basic and fundamental