• synonyms


See more synonyms for supplementary on Thesaurus.com
  1. Also supplemental. of the nature of or forming a supplement; additional.
Show More
noun, plural sup·ple·men·ta·ries.
  1. a person or thing that is supplementary.
Show More

Origin of supplementary

First recorded in 1660–70; supplement + -ary
Related formsnon·sup·ple·men·ta·ry, adjectivepre·sup·ple·men·ta·ry, adjectiveun·sup·ple·men·ta·ry, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for supplementary

Contemporary Examples

Historical Examples

British Dictionary definitions for supplementary


  1. forming or acting as a supplementAlso (less commonly): supplemental (ˌsʌplɪˈmɛntəl)
Show More
noun plural -ries
  1. a person or thing that is a supplement
Show More
Derived Formssupplementarily or rare supplementally, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for supplementary


1660s, from supplement + -ary.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper