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

If dry spells occur during this time, provide supplemental irrigation to prevent bud drop. —Kim Toscano, Southern Living, 31 Oct. 2024

The plan-by-plan variation in supplemental benefits adds to the confusion. —Maya Goldman, Axios, 21 Oct. 2024

For older workers or people in poor health, supplemental life premiums may be lower than an individual policy on the open market. —Liz Knueven, CNBC, 4 Nov. 2024

The Trump campaign also noted enhancements to Medicare Advantage plans during his tenure as president, such as increasing access to telehealth and expanding supplemental benefits for seniors with chronic diseases. —Stephanie Armour, CBS News, 4 Nov. 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