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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

  • additionally adverb
  • preadditional adjective

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!

Keep Reading on Vocabulary.com

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.

Ministers have repeatedly said they need additional resources from Westminster in order to balance their departmental budgets.

From BBC • Apr. 16, 2026

He didn’t respond to requests for additional comment.

From The Wall Street Journal • Apr. 16, 2026

Stormont's finance minister has been making the case to the Treasury to restore the "stabilisation fund" - additional one-off funding which accompanied the restoration of devolution in 2024, which has now ended.

From BBC • Apr. 16, 2026

Any additional yield for such bonds that emerged after the Iran war began vanishing after 15 days, a little bit more than the nine days it took for the stock market to recover.

From Barron's • Apr. 15, 2026

With so many summer travelers expected, the Long Island Rail Road had just announced that it was providing additional service for the three-hour train trip from Penn Station in Manhattan to Amagansett.

From Nazi Saboteurs by Samantha Seiple