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Synonyms of supplementary in English:
supplementary
See US English definition of supplementary
See UK English definition of supplementary
See Spanish definition of suplementario
adjective
1‘many MPs feel the need to seek supplementary income’
SYNONYMS
additional, extra, supplemental, increased, further, more
add-on, complementary, subsidiary, accessory, auxiliary, ancillary, supportive, reserve
2‘a supplementary index’
SYNONYMS
appended, attached, added, extra, accompanying, annexed, adjunct
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