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
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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
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Antonyms & Near Antonyms
Example Sentences
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Recent Examples of supplementary
Prices from around $980 per guest/night, including accommodation, and the women’s health pack, which is a supplementary cost, can be added to 7-, 10- or 14-night stays—for seven nights, the pack would cost around $1,500 on top of the $5,000 Rebalance & Energize program, for instance.
—
Rachel Ingram,
Robb Report,
7 June 2026
This two-day rail journey ferries travelers through some of Western Canada’s most scenic pockets, with stops in Banff, Kamloops, and Jasper, and is a supplementary offering for the influx of travelers expected to visit Vancouver during the FIFA World Cup in June and July.
—
Jessica Puckett,
Condé Nast Traveler,
1 June 2026
The Asian Trekking team said that Andrews completed a solo climb, during which guides provided supplementary oxygen, food and water while tracking his ascent.
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CBS News,
28 May 2026
Follow the example of Sylvia Meagher, a divorcée who spent much of 1965 making an index for the twenty-six supplementary volumes of the Warren Report from her West Village apartment, taking a fine-tooth comb to eighteen thousand pages of hearings and exhibits about the JFK assassination.
—
Dan Piepenbring,
Harpers Magazine,
26 May 2026
See All Example Sentences for supplementary
Rachel Ingram,
Robb Report,
7 June 2026
This two-day rail journey ferries travelers through some of Western Canada’s most scenic pockets, with stops in Banff, Kamloops, and Jasper, and is a supplementary offering for the influx of travelers expected to visit Vancouver during the FIFA World Cup in June and July.
—
Jessica Puckett,
Condé Nast Traveler,
1 June 2026
The Asian Trekking team said that Andrews completed a solo climb, during which guides provided supplementary oxygen, food and water while tracking his ascent.
—
CBS News,
28 May 2026
Follow the example of Sylvia Meagher, a divorcée who spent much of 1965 making an index for the twenty-six supplementary volumes of the Warren Report from her West Village apartment, taking a fine-tooth comb to eighteen thousand pages of hearings and exhibits about the JFK assassination.
—
Dan Piepenbring,
Harpers Magazine,
26 May 2026
See All Example Sentences for supplementary
Recent Examples of Synonyms for supplementary
Adjective
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The tribe established the Shadow Wolves, the first all-Indian DHS auxiliary group that helps secure the border.
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Recruits complete 145 hours of training to become auxiliary deputies, and receive annual refresher and specialized training.
Adjective
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Eliadis calls them complementary.
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Her thesis is that digital and physical are not competing channels but complementary ones, with in-person experience driving consideration that eventually converts online.
Adjective
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Why the Special Olympics airlift exists Travel can be stressful for anybody, but for athletes on their way to competition who also have special accessibility needs, there are additional levels of complication.
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Every additional dataset helps the robot improve its ability to manipulate objects like a human hand.
Adjective
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This means scientists can now apply computational techniques that were previously reserved for conventional reciprocal systems.
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The Sheriff’s Office is handling the investigation under a reciprocal agreement with San Diego police, so neither department investigates its own officers or deputies in on-duty shootings.
Adjective
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Defense Secretary Pete Hegseth is also on Capitol Hill this week, seeking roughly $80 billion in supplemental funding to shore up defense supplies in the aftermath of the Iran war, which is drawing scrutiny when many Americans are reeling from high gas prices and costs of living.
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If enacted, the proposal could reduce or eliminate certain out-of-pocket costs for follow-up mammograms, ultrasounds, and other supplemental breast imaging, depending on individual insurance coverage.
Adjective
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Now, Smith is among those expected to testify at trial, after pleading no contest to an accessory charge.
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One example is increasing Florida’s supply of accessory dwelling units, sometimes called in-law suites or backyard cottages, which add attainable housing stock by reimagining existing neighborhoods rather than building new ones.
Cite this Entry
“Supplementary.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/supplementary. Accessed 26 Jun. 2026.
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