Alter
Improve
Improve verb - To make better.
Usage example: The editor improved the manuscript with his changes
Mutual synonyms
Common collocations
Both words in one sentence
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Xander (who has the memories of his entire life up to his death which he has been using to alter and improve things) is now with Buffy AND Faith and it's heavily implied that all three are sharing the other two (no sex yet, though).
Source: Polyamory -
Weapon synthesis, combining a weapon with a specific item to improve or otherwise alter its stats.
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The creators always maintained that if altering the Back Story could improve the show, then they should alter it.
Source: Series / Red Dwarf
Cite this Source
Improve and Alter. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/alter/improve
Alter & Improve. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/alter/improve>.
Improve or Alter. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/alter/improve.
Google Ngram Viewer shows how "alter" and "improve" have occurred on timeline