supplemental

adjective

ˌsə-plə-ˈmen-tᵊl How to pronounce supplemental (audio)
Definition of supplementalnext
1
as in auxiliary
available to supply something extra when needed the new program will provide supplemental health insurance to thousands of workers

Synonyms & Similar Words

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Antonyms & Near Antonyms
2
as in supplementary
related to each other in such a way that one completes the other an astronomer who regards science and religion not as antithetical but as supplemental belief systems

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

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.
Recent Examples of supplemental The board determined the supplemental information submitted by the ⁠railroads was sufficient to resume the review process. — Glenn Taylor, Footwear News, 19 Aug. 2026 Meanwhile, North Carolina also caps supplemental EC funding at 13% of a district’s student population. — Rebecca Noel, Charlotte Observer, 19 Aug. 2026 In May, the company provided supplemental materials related to operational guidelines for unaccompanied minors and service disruptions. — Chase Hunter, Mercury News, 17 Aug. 2026 Any personal information supplied by an Entrant to the Sponsor will be subject to NPR's Privacy Policy and the supplemental terms of these Official Rules. — August 16, NPR, 16 Aug. 2026 See All Example Sentences for supplemental
Recent Examples of Synonyms for supplemental
  1. auxiliary
  2. supplementary
  3. additional
  4. complementary
  5. accessory
  6. peripheral
Adjective
  • Higher education institutions received revenue through tuition and fees, appropriations, grants & contracts, auxiliary enterprises, gifts and other.
    — Tatiana Sataua, Fortune, 31 Aug. 2026
  • The electricity harvested from the vehicle skin can run onboard systems, recharge battery banks, and reduce the fuel needed for auxiliary generators.
    — Aman Tripathi, Interesting Engineering, 29 Aug. 2026
Definition of auxiliary
Adjective
  • The sleeping surface measures 82 inches (208 cm) long and is widened via slim supplementary cushions to 57 inches (145 cm) at the head by the doors, tapering to 50 inches (127 cm) at the foot between the wheel wells.
    — New Atlas, New Atlas, 18 Aug. 2026
  • In 2024, Purja became the fastest person to summit all 14 of the peaks without supplementary oxygen.
    — Lex Harvey, CNN Money, 31 July 2026
Definition of supplementary
Adjective
  • The jury did convict Rosado of driving under the influence and he was sentenced to five years in prison, but Rosado has been behind bars on a $2 million bail since 2021 so won't have to serve any additional time.
    — Amanda Lee Myers, USA Today, 4 Sep. 2026
  • According to The New York Times, she was sentenced to life in prison, with two additional 30-year sentences to run consecutively with her life term.
    — Jordana Comiter, PEOPLE, 4 Sep. 2026
Definition of additional
Adjective
  • Depending on the formula, those complementary ingredients may also target more familiar skin concerns, including skin hydration, barrier support, fine lines, and uneven texture.
    — Sheryl George, Glamour, 2 Sep. 2026
  • The negotiators of the original pact did not need to contemplate how the three countries would implement complementary subsidies, investment restrictions, or export controls, as such policies were not then in vogue.
    — Chad P. Bown, Foreign Affairs, 1 Sep. 2026
Definition of complementary
Adjective
  • Each vacation rental unit can only have one agreement at a time, which is intended for properties that may have an accessory dwelling unit, Cortez said.
    — Hema Sivanandam, Mercury News, 20 Aug. 2026
  • Colorado also legalized accessory dwelling units statewide in 2024, letting homeowners build small backyard or garage apartments without needing a special hearing or approval.
    — Solomon Greene, The Conversation, 14 Aug. 2026
Definition of accessory
Adjective
  • Other, more peripheral allies of the president have also ascended over the past year to wield more outside influence on certain issues — among them, Republican operative Roger Stone.
    — Shelby Talcott, semafor.com, 31 Aug. 2026
  • Gay desire has been more peripheral to his work, and is usually shadowed by danger.
    — Katy Waldman, New Yorker, 31 Aug. 2026
Definition of peripheral

Browse Nearby Words

supplement
supplemental
supplementary
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Cite this Entry

“Supplemental.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/supplemental. Accessed 5 Sep. 2026.

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