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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!

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.

Michael Cochran is calculating and tacking on additional per-box fuel costs to the Florida lemons he sells to local retailers.

From The Wall Street Journal • May 10, 2026

Education Secretary Mario Delgado said the school year would end on 5 June, leaving parents across the country with less than four weeks to find additional childcare.

From BBC • May 9, 2026

Health officials can’t rule out that additional hantavirus cases may emerge in the cruise ship outbreak, but beyond the ship the risk remains low.

From Salon • May 9, 2026

Compared to exercising in silence, participants were able to continue riding for nearly six additional minutes before reaching exhaustion.

From Science Daily • May 9, 2026

Messrs. Pinkerton & Co. deserve great credit...and have won additional laurels by the success which has crowned their efforts.

From "The Detective's Assistant" by Kate Hannigan