Synonyms of supplementary

supplementary

adjective

1

as in auxiliary

available to supply something extra when needed

the teacher's edition of the textbook comes with a lot of supplementary material

Synonyms & Similar Words

• auxiliary
• additional
• supplemental
• accessory
• peripheral
• makeshift
• accessorial
• appurtenant
• complementary
• added
• further
• backup
• contributory
• assisting
• substitute
• supportive
• assistant
• another
• subordinate
• excess
• subsidiary
• secondary
• tributary
• surplus
• superfluous
• nonessential
• helping
• adjuvant
• unessential
• dispensable
• subservient

Antonyms & Near Antonyms

• main
• principal
• chief
• basic
• primary
• fundamental
• necessary
• prime
• essential
• integral
• vital
• required
• imperative
• requisite
• needful
• needed
• all-important
• indispensable

2

as in complementary

related to each other in such a way that one completes the other

regards theology and philosophy as supplementary fields of study

Synonyms & Similar Words

• complementary
• reciprocal
• supplemental
• mutual
• collective
• correlative
• combined
• communal
• joint
• cooperative
• symbiotic
• common
• shared
• conjoint
• united

Antonyms & Near Antonyms

• nonreciprocal
• noncomplementary