[ in-si-den-tl ]
/ ˌɪn sɪˈdɛn tl /


happening or likely to happen in an unplanned or subordinate conjunction with something else.
incurred casually and in addition to the regular or main amount: incidental expenses.
likely to happen or naturally appertaining (usually followed by to).


something incidental, as a circumstance.
incidentals, minor expenses.

Origin of incidental

First recorded in 1610–20; incident + -al1

Related forms

Can be confused

incidence incidents incidental Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for incidentals

British Dictionary definitions for incidentals


/ (ˌɪnsɪˈdɛntəl) /


happening in connection with or resulting from something more important; casual or fortuitous
(postpositive foll by to) found in connection (with); related (to)
(postpositive foll by upon) caused (by)
occasional or minorincidental expenses


(often plural) an incidental or minor expense, event, or action

Derived Forms

incidentalness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012