supplemental

adjective

sup·​ple·​men·​tal ˌsə-plə-ˈmen-tᵊl 

1

: serving to supplement

2

: nonscheduled

a supplemental airline

supplemental noun

Synonyms

• accessorial
• accessory
• appurtenant
• auxiliary
• peripheral
• supplementary

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

There are supplemental policies from private insurers which are not taxed that will increase your income in case you are disabled. —James Brewer, Forbes, 13 Dec. 2024

Although Millett’s 2023 bill didn’t pass, a year later lawmakers decided to create and fund the rent relief program with $18 million through the supplemental budget process. —Sawyer Loftus, ProPublica, 12 Dec. 2024

Source of income is defined to include housing assistance, housing choice vouchers, public assistance, veterans' benefits, Social Security, supplemental security income or other retirement programs, and other programs administered by any federal, state, local, or nonprofit entity. —Arpan Lobo, Detroit Free Press, 12 Dec. 2024

This plan will likely involve increasing the amount of supplemental food given to the fish. —Laura Baisas, Popular Science, 12 Dec. 2024

Word History

Etymology

supplement entry 1 + -al entry 1

First Known Use

1605, in the meaning defined at sense 1

Medical Definition

supplemental

adjective

sup·​ple·​men·​tal ˌsəp-lə-ˈment-ᵊl 

: serving to supplement : supplementary

Legal Definition

supplemental

adjective

sup·​ple·​men·​tal ˌsə-plə-ˈment-ᵊl 

: serving to complete or make an addition

supplemental appropriations

specifically : of, relating to, or being a supplemental pleading

supplemental noun