Add
Add verb - To join (something) to a mass, quantity, or number so as to bring about an overall increase.
Lighten
Lighten verb - To become glad or hopeful.
Common collocations
Cite this Source
Lighten and Add. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/add/lighten
Add & Lighten. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/add/lighten>.
Lighten or Add. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/add/lighten.
Google Ngram Viewer shows how "add" and "lighten" have occurred on timeline