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

Unleashing American Energy paused the supplemental funding from the IIJA, meaning that the families who received the grant in January now must pay for it with their next electric bill. —Josh Hammer, Newsweek, 14 Feb. 2025

Lynch revealed last year that he’d been diagnosed with emphysema and needed to rely on supplemental oxygen after having been a smoker since the age of 8. —Jami Ganz, New York Daily News, 8 Feb. 2025

The department also distributes money to school districts through the federal Title I program, which gives supplemental funding to schools with large numbers of students from low-income families. —Silas Allen, Fort Worth Star-Telegram, 7 Feb. 2025

Aflac — The provider of supplemental insurance coverage ticked down 1%. —Lisa Kailai Han, CNBC, 5 Feb. 2025

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