Supplement
Supplement verb - Add as a supplement to what seems insufficient.
Up and supplement are semantically related. In some cases you can use "Up" instead a verb "Supplement".
Up
Up verb - To make greater in size, amount, or number.
Usage example: climbing fuel prices have forced the delivery company to up its prices
Mutual synonyms
Cite this Source
Up and Supplement. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/supplement/up
Supplement & Up. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/supplement/up>.
Up or Supplement. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/supplement/up.
Google Ngram Viewer shows how "supplement" and "up" have occurred on timeline