supplemental

Added on later

Supplemental means added to supply what is lacking or to complete something: supplemental income, supplemental materials, supplemental insurance.

It functions identically to supplementary, though supplemental appears more often in American English, especially in official or institutional contexts: supplemental nutrition assistance, supplemental security income.

additional

extra

Additional, beyond necessary

secondary · subsidiary · peripheral · accessory · adjunct · incremental · accompanying · appended · attached · bonus

educational

tutoring

Individual academic guidance

curriculum · instruction · remedial · enrichment · after-school · homework · practice · drill · review · lesson

nutritional

vitamins

Essential organic nutrients

antioxidants · calcium · iron · zinc · magnesium · electrolytes · fiber · multivitamin · glucosamine · herbal

financial

income

Regular monetary receipts

funding · grant · subsidy · stipend · allowance · pension · retirement · disability · unemployment · security

Categories
Opposites
importance/centrality

supplementalprimary

Chief in importance

main · principal · central · chief · core

necessity

supplementalnecessary

Indispensable, cannot omit

essential · required · indispensable · vital · needed

mathematical/quantitative operation

supplementalsubtractive

Involving removal or reduction

reductive · diminishing · detracting

Phrases
Family

supplement, supplements, supplementary, supplemented, supplementation, supplementals, dietary supplement, health supplement, protein supplement

Familiarity
Top 100,000
Profile
Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G