1
as in auxiliary
available to supply something extra when needed
the teacher's edition of the textbook comes with a lot of supplementary material
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
2
as in complementary
related to each other in such a way that one completes the other
regards theology and philosophy as supplementary fields of study
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
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Recent Examples of supplementary
This makes for great supplementary income as a side hustle while working full-time, or in between jobs.
—
Rachel Wells, Forbes.com, 14 Aug. 2025
The final bit of cloud identification involves supplementary features that are attached to or merged with the cloud.
—Noel Kirkpatrick, Treehugger, 7 Aug. 2025
Camel milk may hold real potential as a supplementary treatment for allergic asthma, especially due to its anti-inflammatory and immune-modulating properties.
—New Atlas, 6 July 2025
Known as the enhanced supplementary leverage ratio, the measure regulates the quantity and quality of capital banks should be keeping on their balance sheets.
—Jeff Cox, CNBC, 25 June 2025
See All Example Sentences for supplementary
Rachel Wells, Forbes.com, 14 Aug. 2025
The final bit of cloud identification involves supplementary features that are attached to or merged with the cloud.
—Noel Kirkpatrick, Treehugger, 7 Aug. 2025
Camel milk may hold real potential as a supplementary treatment for allergic asthma, especially due to its anti-inflammatory and immune-modulating properties.
—New Atlas, 6 July 2025
Known as the enhanced supplementary leverage ratio, the measure regulates the quantity and quality of capital banks should be keeping on their balance sheets.
—Jeff Cox, CNBC, 25 June 2025
See All Example Sentences for supplementary
Recent Examples of Synonyms for supplementary
Adjective
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The airline has been swapping out auxiliary power units (APUs) — small engines that are located in the back of planes — since 2022, The Wall Street Journal reported Thursday.—
Deirdre Bardolf,
FOXNews.com,
26 Sep. 2025
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Updates include a new cafeteria space, a new two-story wing, an agricultural lab with welding booths, an auxiliary gymnasium, music and band classrooms, a construction lab and more.—
Arkansas Online,
Arkansas Online,
25 Sep. 2025
Adjective
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For classical concerts, the purchase of an adult ticket entitles patrons to a complementary ticket for a guest under 18.—
Ed Masley,
AZCentral.com,
29 Sep. 2025
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That was emblematic of the team’s failure to play a sort of complementary baseball, of the whole never equaling the sum of its parts.—
Tim Britton,
New York Times,
29 Sep. 2025
Adjective
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Some robo-advisors offer additional features, such as access to a human advisor and tax-loss harvesting, which uses losses to offset other portfolio gains.—
Kate Dore, CFP®, EA,Kelli Grant, CFP®,
CNBC,
1 Oct. 2025
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Since September 2024, a new federal law requires mammogram reports to state whether breast tissue is dense, and to mention the possibility of additional imaging.—
Dr. Megha Gupta,
ABC News,
1 Oct. 2025
Adjective
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On Tuesday, Nike said on the earnings call that reciprocal tariff rates have increased for certain countries since its last earnings call in late June.—
Jeff Marks,
CNBC,
30 Sep. 2025
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More importantly, this is an opportunity to cultivate relationships that are truly reciprocal.—
Valerie Mesa,
PEOPLE,
21 Sep. 2025
Adjective
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One of the more benign but notable side effects is that, ironically, taking supplemental iron interferes with the absorption of iron from food.—
Kristine Thomason,
Vogue,
24 Sep. 2025
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Drought reduces available pasture and forage, leaving ranchers without enough grass to sustain their herds and forcing them to rely on costly supplemental feed that can quickly become unaffordable.—
Aliss Higham,
MSNBC Newsweek,
23 Sep. 2025
Adjective
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Proposals include creating a statewide framework for accessory dwelling units (ADUs) and establishing new loan programs for homebuyers.—
Anna Kleiber,
jsonline.com,
26 Sep. 2025
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And further options, including a snorkel, winches, lights, and storage solutions to mount to the roof and side accessory rails, only enhance the impression that the Quartermaster belongs in the dirt.—
Michael Van Runkle,
Robb Report,
24 Sep. 2025
Cite this Entry
“Supplementary.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/supplementary. Accessed 1 Oct. 2025.
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