Source : WordNet®

incidental
     n 1: (frequently plural) an expense not budgeted or not
          specified; "he requested reimbursement of $7 for
          incidental expenses" [syn: {incidental expense}, {minor
          expense}]
     2: an item that is incidental

incidental
     adj 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" [syn: {incident}] [ant:
            {basic}]
     2: following as a consequence; "an excessive growth of
        bureaucracy, with related problems"; "snags incidental to
        the changeover in management" [syn: {accompanying}, {attendant},
         {concomitant}, {incidental to(p)}]
     3: not of prime or central importance; "nonessential to the
        integral meanings of poetry"- Pubs.MLA [syn: {nonessential}]