supplemental

adjective

sup·​ple·​men·​tal ˌsə-plə-ˈmen-tᵊl 

1

: serving to supplement

2

: nonscheduled

a supplemental airline

supplemental noun

Synonyms of supplemental

• auxiliary
• additional
• supplementary
• accessory
• peripheral

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 supplemental draft is for players who typically have college eligibility or have faced disciplinary issues, and who become draft-eligible after the year’s NFL draft has taken place. —Jemele Hill, The Atlantic, 19 June 2026

Sorsby had to be ineligible for NCAA play to be able to apply for the NFL's supplemental draft. —ABC News, 18 June 2026

In the league’s history, 46 players have been selected in the supplemental draft, and Sorsby is expected to be the 47th. —Nick Harris june 18, Fort Worth Star-Telegram, 18 June 2026

Supervisors directed staff to work with the developer, Serrano Associates, to conduct a supplemental traffic engineering analysis. —Corey Schmidt, Sacbee.com, 17 June 2026

Word History

Etymology

supplement entry 1 + -al entry 1

First Known Use

1605, in the meaning defined at sense 1

Rhymes for supplemental

• accidental
• compartmental
• continental
• detrimental
• elemental
• fundamental
• governmental
• incidental
• incremental
• instrumental
• interdental
• monumental

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