sup·​ple·​men·​ta·​ry | \ ˌsə-plə-ˈmen-tə-rē How to pronounce supplementary (audio) , -ˈmen-trē \

Definition of supplementary

1 : added or serving as a supplement : additional supplementary reading
2 : being or relating to a supplement or a supplementary angle

Synonyms & Antonyms for supplementary



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Examples of supplementary in a Sentence

a list of supplementary material for the class the teacher's edition of the textbook comes with a lot of supplementary material
Recent Examples on the Web Nominations must come with references attesting to the nominee’s efforts along with supplementary materials to showcase the nominee’s awards, photos, articles or documents that showcase their work. From Usa Today Network And Wire Reports, USA TODAY, 18 May 2022 Forecasters have exhausted their annual list of names for the past two years and had to use supplementary lists. Leigh Morgan, al, 15 May 2022 One boy wrote about how, as a third grader, he had been enrolled in a supplementary math program that had six hundred applicants. Peter Hessler, The New Yorker, 9 May 2022 In a lot of games, those supplementary talents carried them in ways Lue had never been accustomed to in Cleveland when LeBron James and Kyrie Irving were sidelined. Shane Young, Forbes, 4 July 2021 Health officials say monitoring sewers can provide a supplementary source of information on outbreaks as test results dwindle. Zachary Hansen, ajc, 24 Mar. 2022 While Citizen is positioning Protect as complementary and supplementary to existing public emergency response systems, the startup hasn't always stayed in its lane, or been clear in its execution. Sara Ashley O'brien, CNN, 3 Aug. 2021 Digital is now at the center of learning and in-person is supplementary. Gary Drenik, Forbes, 29 Dec. 2021 This scheduling model destabilizes earnings; disrupts access to childcare, continuing education and supplementary incomes; and could ultimately affect an individual’s quality of life. Joshua Siler, Forbes, 18 Mar. 2022 See More

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

First Known Use of supplementary

1667, in the meaning defined at sense 1

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Time Traveler for supplementary

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The first known use of supplementary was in 1667

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Dictionary Entries Near supplementary



supplementary angle

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Statistics for supplementary

Last Updated

20 May 2022

Cite this Entry

“Supplementary.” Dictionary, Merriam-Webster, Accessed 20 May. 2022.

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More Definitions for supplementary


sup·​ple·​men·​ta·​ry | \ ˌsə-plə-ˈmen-tə-rē How to pronounce supplementary (audio) \

Kids Definition of supplementary

: added to something else : additional supplementary income


sup·​ple·​men·​ta·​ry | \ ˌsəp-lə-ˈment-ə-rē, -ˈmen-trē How to pronounce supplementary (audio) \

Medical Definition of supplementary

: added or serving as a supplement supplementary vitamins


sup·​ple·​men·​ta·​ry | \ ˌsə-plə-ˈmen-tə-rē, -trē How to pronounce supplementary (audio) \

Legal Definition of supplementary

: added or serving as a supplement

More from Merriam-Webster on supplementary

Nglish: Translation of supplementary for Spanish Speakers

Britannica English: Translation of supplementary for Arabic Speakers


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