| noun | (frequently plural) an expense not budgeted or not specified “he requested reimbursement of $7 for incidental expenses” |
| noun | an item that is incidental |
| adjective | (sometimes followed by `to') minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence “incidental expenses” |
| adjective | not of prime or central importance; - Pubs.MLA “nonessential to the integral meanings of poetry” |
| adjective | following or accompanying as a consequence “an excessive growth of bureaucracy, with attendant problems” |
| nonessential | noun | anything that is not essential |
| attendant | noun | an event or situation that happens at the same time as or in connection with another |
| attend | verb | to accompany as a circumstance or follow as a result |
| consequence | noun | a phenomenon that follows and is caused by some previous phenomenon |
| concomitance | noun | occurrence or existence together or in connection with one another |
| resultant | noun | the final point in a process |
| result | verb | have as a result or residue |