D defs.my
Entry 2 senses · 2 variants Webster, 1913

Incidental

/ĭnˌ-sĭd-ĕn'-təl/ · In·ci·den·tal · IPA /[ɪnsɪˈdɛ.ɾ̃əl]/
01 a. Happening, as an occasional event, without regularity; coming without design; casual; accidental; hence, not of prime concern; subordinate;…
  1. 1.
    Happening, as an occasional event, without regularity; coming without design; casual; accidental; hence, not of prime concern; subordinate; collateral; as, an incidental conversation; an incidental occurrence; incidental expenses.
    “By some, religious duties . . . appear to be regarded . . . as an incidental business.” Rogers.
    “I treat either or incidentally of colors.” Boyle.
02 n. An incident; that which is incidental; esp., in the plural, an aggregate of subordinate or incidental items not particularized; as, the exp…
  1. 1.
    An incident; that which is incidental; esp., in the plural, an aggregate of subordinate or incidental items not particularized; as, the expense of tuition and incidentals.