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 In December 2021, however, the DOL under the Biden administration issued a supplemental statement, contending that most plan fiduciaries were not suited to evaluate alternative investments, given their complexity and high risk. — Cheryl Winokur Munk, CNBC, 10 Oct. 2026 Previous strategies for growing plants on Mars included rinsing these poisons out, bringing supplemental fertilizers from Earth, or avoiding Martian soil entirely and using hydroponics. — Charles Q. Choi, Space.com, 9 Oct. 2026 In addition, they were each charged with grand theft of Siira’s supplemental security income. — Idaho Statesman, 9 Oct. 2026 Officials say the Susquehanna River, which runs from Cooperstown, New York, to Havre de Grace, Maryland, is only used as a supplemental water supply during severe droughts. — CBS News, 8 Oct. 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
  • Storyteller Overland Powering up the sockets and appliances, the Gear Mode packs in 4+ kWh of Lithionics batteries that send power through a 2,000-W inverter and charge while driving through a high-output auxiliary alternator.
    — New Atlas, New Atlas, 15 Oct. 2026
  • The cabin also has been outfitted with brand’s Smooth Pack amenities, which include ambient lighting and auxiliary outlets.
    — Bryan Hood, Robb Report, 14 Oct. 2026
Definition of auxiliary
Adjective
  • The space is warm and lo-fi—Polaroids of friends and a handwritten lineup of the day’s specials (which can be added at a supplementary cost) are stuck to a noticeboard—but the food is sharp and assured.
    — Helen Rosner, New Yorker, 11 Oct. 2026
  • Since 1973, however, Olympic medalists and Asian Games gold medalists have been able to replace the full term with a supplementary service which consists of three weeks of basic training.
    — ABC News, ABC News, 7 Oct. 2026
Definition of supplementary
Adjective
  • After confirming that the line from Exeter that ran through the village of Starcross didn’t open until the end of May, 1846, Cade and his team turned to the schedule for additional clues.
    — Mike McRae October 15, New Atlas, 16 Oct. 2026
  • Darrell Alexander, who runs composer agency Cool Music, sees working as an additional composer as the best entry point for anyone starting out.
    — Ben Croll, Variety, 16 Oct. 2026
Definition of additional
Adjective
  • Silver Mirror recommends three Volmira visits, one a month, followed by three months of complementary facials, then repeating the cycle.
    — Kathryn Hopkins, Footwear News, 14 Oct. 2026
  • Combining several complementary signals could deliver greater benefits.
    — Mike McRae October 09, New Atlas, 10 Oct. 2026
Definition of complementary
Adjective
  • These superficial veins are not critical to circulation — they’re considered accessory veins, which the body uses mainly for volume storage and temperature regulation, Stoughton said.
    — Erica Sloan, Washington Post, 10 Oct. 2026
  • The accessory lineup has become fairly standard across brands.
    — Lauren Jarvis-Gibson, Charlotte Observer, 1 Oct. 2026
Definition of accessory
Adjective
  • But because of my peripheral association with the Exorcist reissue, people are now taking my phone calls.
    — David Fear, Rolling Stone, 18 Oct. 2026
  • Blaze, previously more peripheral to the adventure, became essential.
    — Davide Abbatescianni, Variety, 16 Oct. 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 20 Oct. 2026.

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