“Supplementary” means something that is added to what already exists in order to complete it, improve it, or fill a gap.

Core meaning

  • Provided in addition to something else.
  • Added to complete , enhance, or support what is already there, rather than replace it.
  • Often similar to “additional,” but with more emphasis on completing or filling in what’s missing.

Simple examples

  • School: “supplementary reading” = extra reading that supports the main textbook.
  • Law/work: a “supplementary report” = an extra report that adds more details to the original one.
  • Everyday: “supplementary information” = extra info that helps make the picture more complete.

In one sentence

“Supplementary” = extra, but with a purpose: it’s added to make something more complete, clearer, or stronger.

Information gathered from public forums or data available on the internet and portrayed here.