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

The track is fighting for its future, struggling to get a foothold in a national racing landscape that is supported by supplemental gaming income. —John Cherwa, Los Angeles Times, 25 Dec. 2024

Courtney also took on a leading role to ensure that disaster and agricultural supplemental funding would pass before the end of the year. —Lisa Hagen, Hartford Courant, 23 Dec. 2024

That’s a tiny portion of the 1.5 million Americans who now receive some form of supplemental oxygen. —Peter Elkind, ProPublica, 16 Dec. 2024

The latter has not only provided supplemental income, but blossomed into more opportunities, Dogen says, including a pair of book deals. —Ryan Ermey, CNBC, 5 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