Strengthening
Strengthening noun - The act of increasing the strength of something.
Up and strengthening are semantically related. In some cases you can use "Up" instead the word "Strengthening" as a noun or a verb.
Up
Up adjective - Being at a higher level than average.
Strengthening and up are semantically related. Sometimes you can use "Strengthening" instead a noun "Up".
Cite this Source
Up and Strengthening. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/strengthening/up
Strengthening & Up. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/strengthening/up>.
Up or Strengthening. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/strengthening/up.
Google Ngram Viewer shows how "strengthening" and "up" have occurred on timeline