Synonyms of supplemental
- 1. auxiliary, subsidiary, supplemental, supplementary, secondary (vs. primary)
- usage: functioning in a supporting capacity; "the main library and its auxiliary branches"
- 2. supplementary, supplemental, additive (vs. subtractive)
- usage: added to complete or make up a deficiency; "produced supplementary volumes"
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Definition and meaning of supplemental (Dictionary)
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