Additional and Supplementary

Additional

Additional adjective - Resulting in an increase in amount or number.
Usage example: there turned out to be additional reasons for her unauthorized absence
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Synonyms for Additional

Supplementary is a synonym for additional in extra topic. In some cases you can use "Supplementary" instead the word "Additional" as an adjective or an adverb, when it comes to topics like further, other. popular alternative

Nearby Words: addition, additive, additionally

Supplementary

Supplementary adjective - Available to supply something extra when needed.
Usage example: the teacher's edition of the textbook comes with a lot of supplementary material

Additional is a synonym for supplementary in further topic. You can use "Additional" instead the word "Supplementary" as an adjective or an adverb, if it concerns topics such as other. popular alternative

Both words in one sentence

  • Prestige Class Supplementary materials have introduced additional archetypes, but Prestige classes seem to be out of the loop, despite some experimental play-testing to reintroduce them.
  • Fanfic / Pacific: World War II U.S. Navy Shipgirls Potatoes. All There in the Manual: Action Report, a supplementary book which features things like concept art and additional information regarding the universe of Pacific.
  • Video Game / EarthBound Beginnings All There in the Manual: Very little about the characters' backstories and personalities is stated in-game, but the supplementary guidebook Encyclopedia MOTHER contains a good deal of additional information about Ninten, Lloyd, Ana, and Teddy that you could never find out just by playing the game.
Cite this Source
Supplementary and Additional. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/additional/supplementary
Additional & Supplementary. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/additional/supplementary>.
Supplementary or Additional. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/additional/supplementary.
Google Ngram Viewer shows how "additional" and "supplementary" have occurred on timeline