Extra
Extra adjective - Being over what is needed.
Usage example: always has extra food on hand in the event that unexpected company drops by
Supplemental is a synonym for extra in additional topic. In some cases you can use "Supplemental" instead the word "Extra" as an adjective or a noun or an adverb, when it comes to topics like accessory, ancillary. popular alternative
Mutual synonyms
Related pairs
Both words in one sentence
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According to supplemental material, the AIS has extra space in its arms that can be refitted with additional gear, allowing ARKS to change its functionality depending on the situation.
- The Maslow Supplemental adds a few extra scenes set in the first three seasons, in the same style but more self-contained.
Source: Fanfic Recs / Kim Possible -
Nowadays, game publishers sometimes make "collector's editions" of certain games, which usually means that if one pays extra for the game one gets various feelies and supplemental materials included with the purchase.
Source: Feelies
Cite this Source
Supplemental and Extra. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/extra/supplemental
Extra & Supplemental. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/extra/supplemental>.
Supplemental or Extra. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/extra/supplemental.
Google Ngram Viewer shows how "extra" and "supplemental" have occurred on timeline