adj. likely to happen in connection with something else; secondary, nonessential, minor

n. secondary item, something minor

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Noun
1. (frequently plural) an expense not budgeted or not specified; "he requested reimbursement of $7 for incidental expenses"
(synonym) incidental expense, minor expense
(hypernym) expense
(classification) plural, plural form
2. an item that is incidental
(hypernym) item, point

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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"
(synonym) incident
(antonym) basic
(similar) omissible
2. following as a consequence; "an excessive growth of bureaucracy, with related problems"; "snags incidental to the changeover in management"
(synonym) accompanying, attendant, concomitant, incidental to(p)
(similar) related, related to
3. not of prime or central importance; "nonessential to the integral meanings of poetry"- Pubs.MLA
(synonym) nonessential
(similar) inessential, unessential

adj. incidental

adj. incidental; parenthetic, parenthetical