incidental

Reading level: hard

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun (frequently plural) an expense not budgeted or not specified
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

From incident + -al.

Nor is this, the most striking phenomenon incidental to such a state. — Oliver Twist, Charles Dickens
Towards sunset, as usual in such cases, the delirium incidental to the fever came on. — The Moonstone, Wilkie Collins
She didn't say "sir"; probably because she was too pretty to bother about such incidentals. — The Green Mouse, Chambers, Robert W. (Robert William)

incidental expense, minor expense

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