Adjective
1. (sometimes followed by `to') minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence;
"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"2. following as a consequence;
"an excessive growth of bureaucracy, with related problems""snags incidental to the changeover in management"3. not of prime or central importance;
"nonessential to the integral meanings of poetry"- Pubs.MLA