incidental
名词 incidental:
(frequently plural) an expense not budgeted or not specified
同义词:incidental expense, minor expense
an item that is incidental
形容词 incidental:
(sometimes followed by `to') minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence
同义词:incident
following as a consequence
同义词:accompanying, attendant, concomitant, incidental to
not of prime or central importance- Pubs.MLA
同义词:nonessential