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Synonyms

additional

American  
[uh-dish-uh-nl] / əˈdɪʃ ə nl /

adjective

  1. added; more; supplementary.

    additional information.


additional British  
/ əˈdɪʃənəl /

adjective

  1. added or supplementary

"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

Other Word Forms

Etymology

Origin of additional

First recorded in 1630–40; addition + -al 1

Explanation

If your parents get you a cell phone and add it to their plan as an additional line, they are adding one more line to their bill, so additional means another or one more. Even though they added an additional line to their plan, your parents might ask you to pay for the additional charges. That means they will see how much more your phone usage adds to their plan, and will charge it back to you. If you complain, they might say to avoid additional conflict, you can just get your own plan and pay all of the bills!

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Vocabulary lists containing additional

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Trump said Thursday the U.S. would send an additional 5,000 troops to Poland.

From The Wall Street Journal • May 25, 2026

I prefer my “eggs” drier and firmer, so I’ll usually cook the tofu for an additional two to three minutes.

From Salon • May 24, 2026

The international project brought together researchers from the Wellcome Sanger Institute, the Ontario Veterinary College at the University of Guelph, the University of Bern, and several additional institutions.

From Science Daily • May 24, 2026

Parts of the two eastern areas are under the control of the M23, a rebel group that controls parts of the region - which has brought additional difficulties in dealing with Ebola.

From BBC • May 23, 2026

A reasonable estimate of the additional costs for capitalizing a gradual emancipation program would have increased the national debt to about $125 million.

From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis

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