additional

adjective

ad·​di·​tion·​al ə-ˈdi-sh(ə-)nəl How to pronounce additional (audio)
a-
Synonyms of additional
: more than is usual or expected : added
additional information

Synonyms of additional

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Examples of additional in a Sentence

Larger windows will require additional work, but the additional light they will provide may be worth the extra trouble. there turned out to be additional reasons for her unauthorized absence
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Using dedicated unmanned refueling aircraft could also free more Super Hornets for combat missions instead of requiring them to carry additional fuel for other aircraft. — Neetika Walter, Interesting Engineering, 20 Oct. 2026 The Biden administration subsequently extended the designation, most recently in January 2025, when DHS authorized an additional 18 months of protection through October 2026. — Arkansas Online, 20 Oct. 2026 In fact, numerical simulations of Schrödinger’s equation have recently shown that with each additional particle, decoherence becomes roughly twice as strong. — Philipp Strasberg, Scientific American, 20 Oct. 2026 PhotoTat can have additional practical applications, including for medical tattoos like those done on cancer patients undergoing radiation therapy. — Devika Rao, TheWeek, 19 Oct. 2026 See All Example Sentences for additional

Word History

Etymology

addition + -al entry 1

First Known Use

1563, in the meaning defined above

Time Traveler
The first known use of additional was in 1563

Rhymes for additional

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Browse Nearby Words

addition agent
additional
additional accompaniment
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Cite this Entry

“Additional.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/additional. Accessed 25 Oct. 2026.

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Kids Definition

additional

adjective
ad·​di·​tion·​al ə-ˈdish-nəl How to pronounce additional (audio)
-ən-ᵊl
: being an addition : extra
additionally
-ē
adverb
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