sup·ple·men·tal | \ˌsə-plə-ˈmen-tᵊl \

Definition of supplemental 

1 : serving to supplement

2 : nonscheduled a supplemental airline

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Other Words from supplemental

supplemental noun

Synonyms & Antonyms for supplemental


accessory, appurtenant, auxiliary, peripheral, supplementary


chief, main, principal

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Examples of supplemental in a Sentence

She receives a supplemental income every month from the government. the new program will provide supplemental health insurance to thousands of workers

Recent Examples on the Web

Unfortunately no amount of supplemental healing foods can help if your core diet is mainly processed food/sugar/grains/animal-byproducts with a lack of raw natural ingredients. Blake Bakkila,, "This Bachelor Star Says Her Acne Cleared Up Because of These 5 Foods," 21 June 2018 The additional $45 million in funding will come from a plant facility supplemental levy and Idaho Lottery funds, Hollar said. Michael Katz, idahostatesman, "You gave Boise schools $172.5 million for upgrades. Here's how the money is being spent.," 14 June 2018 But what separates Earthquake Alert! from many other apps is the supplemental information that comes following an event, such as fatality figures and economic impact. Cliff Kapono,, "These smartphone apps will help you get through a natural disaster," 8 July 2018 Lawmakers also have filed a supplemental budget bill that would allocate $23 million for $500 employee bonuses, on top of the pay raises, and $11 million for one-time payments of $400 to retirees. Washington Post, "Delaware Senate approves operating budget for next year," 20 June 2018 Henry has not filed a supplemental budget bill either -- which would also take at least five days to move through the legislative process. Julia O'donoghue,, "When will Louisiana have a state budget?," 29 May 2018 Tying a supplemental income system to the existing tax code or to a worker’s existing is another option, although experts say a universal payment system would be simpler to administer than one that phases out based on earnings or other criteria. NBC News, "Finland's experiment with giving away money shines a light on the idea of universal basic income," 29 Apr. 2018 The supplemental draft serves players whose circumstances have changed — academic ineligibility would be one example — subsequent to the primary draft held in April. Nate Davis, USA TODAY, "Giants select Western Michigan cornerback Sam Beal in third round of NFL supplemental draft," 11 July 2018 Most athletes already eat adequate amounts of high-quality protein, but supplemental protein appears safe in moderation. Peter Andrey Smith, Outside Online, "Don't Trust the Label on Your Supplements," 5 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'supplemental.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of supplemental

1605, in the meaning defined at sense 1

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Last Updated

8 Oct 2018

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Time Traveler for supplemental

The first known use of supplemental was in 1605

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English Language Learners Definition of supplemental

: added to something else to make it complete


sup·ple·men·tal | \ˌsəp-lə-ˈment-ᵊl \

Medical Definition of supplemental 

: serving to supplement : supplementary


sup·ple·men·tal | \ˌsə-plə-ˈment-ᵊl \

Legal Definition of supplemental 

: serving to complete or make an addition supplemental appropriations specifically : of, relating to, or being a supplemental pleading

Other Words from supplemental

supplemental noun

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Comments on supplemental

What made you want to look up supplemental? Please tell us where you read or heard it (including the quote, if possible).


a state of commotion or excitement

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