1. occurring or likely to occur as an unpredictable or minor accompaniment: the snags incidental to a changeover in upper management. see synonyms at accidental.
2. of a minor, casual, or subordinate nature: incidental expenses.
3. A minor accompanying item or expense: a pocket in the suitcase for incidentals.

1. loosely associated; existing as a byproduct, tangent, or accident.
2. entering or approaching, prior to reflection (more frequently incident).
3. incidental expense.

1. happening, as an occasional event, without regularity; coming without design; casual; accidental; hence, not of prime concern; subordinate; collateral
2. an incident; that which is incidental; esp., in the plural, an aggregate of subordinate or incidental items not particularized.

1. occurring, inseparably or fortuitously, in conjunction with something else, usually of greater importance; of minor importance; occasional; casual: as incidental expenses.
2.
3. something subordinate or casual: often used in the plural to mean minor expenses.

1. following or accompanying as a consequence
2. (frequently plural) an expense not budgeted or not specified
3. (sometimes followed by `to') minor or casual or subordinate in significance or nature or occurring as a chance concomitant or consequence
4. not of prime or central importance
5. an item that is incidental