additional

abbreviation add'l

1. not comparableSupplemental or added to something.

   additional charge

   5 more examples

   additional information

   additional resources

   You may be charged an additional fee for late payment.

   The hotel provided additional towels on request.

   Why this already very fast train should be speeded up still further, when none of the other more easily timed S.R. West of England trains has a single minute pared from its schedule, is unexplained - unless this is a playful dig at the Western Region, most of whose expresses, by reason of additional stops, will be decelerated from the same date.

   1961 October 28, “The winter timetables of British Railways: Southern Region”, in Trains Illustrated, page 593

   Synonyms: accessional, accessive, additionary, adjunctive, ascititious, auxiliary, complemental, extra

plural additionals

1. Something added.

   […] having been well vers’d in British Histories, and a singular lover of Antiquities, [he] made many additionals to the Historie of Cambria published by Dav. Powell […]

   1692, Anthony à Wood, Athenæ Oxonienses, London: Thomas Bennet, page 248

   1 more example

   For having received, from my Lord, an Additional, of great Importance; which was, that Owen, of his own Accord, after Examination, should compare the Case of your Majesty, (if you were Excommunicate,) to the Case, of a Prisoner, Condemned at the Barr; which Additional was subscribed by one Witness; but yet I perceived it was spoken aloud, and in the Hearing of others; I presently sent down a Copy thereof […]

   1614, Francis Bacon, “A Letter to the King touching Peacham’s Cause. January 27. 1614”, in Resuscitatio, or, Bringing into publick light severall pieces of the works […] of Francis Bacon, London: William Lee, published 1657, page 49