Main entry: incident, incidental
Definition: (sometimes followed by `to') minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence
Usage: incidental expenses; the road will bring other incidental advantages; extra duties incidental to the job; labor problems incidental to a rapid expansion; confusion incidental to a quick change
Antonyms: basic
Definition: pertaining to or constituting a base or basis
Antonyms: central
Definition: in or near a center or constituting a center; the inner area
Antonyms: primary
Definition: of first rank or importance or value; direct and immediate rather than secondary