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

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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

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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 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 Chicago will move ahead with its full $260 million supplemental pension payment, Mayor Brandon Johnson promised the city’s investors yesterday. — Chicago Tribune, 14 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
  • New features include more classrooms and science labs, an auxiliary gym, changing rooms, collaborative learning spaces and two gender-neutral restrooms.
    — Mike Danahey, Chicago Tribune, 20 Aug. 2026
  • Robbie Connolly is going to go from auxiliary guitar to lead guitar.
    — Andy Greene, Rolling Stone, 17 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
  • Someone with gestational hypertension will need more frequent monitoring, which may include home blood pressure measurements, blood and urine tests, and additional monitoring of fetal growth and well-being.
    — Faye Chiu, CNN Money, 21 Aug. 2026
  • Aurora also participated in the DuPage County joint bid to secure additional salt.
    — Steve Zalusky, Chicago Tribune, 21 Aug. 2026
Definition of additional
Adjective
  • Strong federal oversight and strong state oversight are complementary, not contradictory.
    — John R. Gordon, Hartford Courant, 19 Aug. 2026
  • While in the French capital, Hadid and Cooper were seen wearing coordinating neutral hues and complementary Boucheron bands.
    — Laura Hawkins, Vogue, 18 Aug. 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
  • Vanderbosch recommends picking a patch of sky to focus on until a quick, bright streak passes by — even in your peripheral vision — and to avoid looking at your phone.
    — Adithi Ramakrishnan, Chicago Tribune, 9 Aug. 2026
  • Even in the third-person narration of Call of the Wild the dramatis personae of eccentric, infighting dogs overshadows the flat and peripheral human characters until Thornton appears.
    — Literary Hub, Literary Hub, 5 Aug. 2026
Definition of peripheral

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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 25 Aug. 2026.

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