Synonyms for

Supplementary

Verb / ˌsʌplʌˈmentɜ:i: / / ˌsʌplʌˈmenɜ:i: / / ˌsʌplʌˈmentri: / / ˌsʌplʌˈmentʃri: / Another word for supplementary — explore alternatives below. For syllable breakdowns and pronunciation, see this word on Syllablesworld.

Definition

added to complete or enhance something

Synonyms & similar words

subsidiary supplemental auxiliary additional extra complementary further secondary ancillary auxiliary backup supporting top-up spare surplus accessorial appurtenant subsidiary supplemental supernumerary incremental incrementary add-on

Synonyms by register

Formal

additional ancillary auxiliary subsidiary

Informal

extra added backup spare

Literary

adscititious appendant

Antonyms

primary essential main principal fundamental core vital

Common collocations

  • supplementary material
  • supplementary income
  • supplementary angle
  • supplementary reading
  • supplementary information
  • supplementary evidence
  • supplementary benefits

Word family

noun supplement
adverb supplementally

Usage note

Often used to describe something that adds to or completes something else, providing extra support or information. It implies that the primary item is sufficient on its own, but the supplementary item enhances it.

Example sentences

  1. The company provided supplementary training for new employees.
  2. The book had a lot of supplementary information in the appendix.
  3. She received supplementary income from her part-time job.
  4. The team used supplementary equipment for the experiment.
  5. The teacher gave supplementary assignments to challenge the students.

Quotes

  • The supplementary income from my part-time job helped me pay my bills.
  • Supplementary materials can be helpful when studying for a test.
  • The team needed supplementary equipment to complete the experiment.

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