Increase
Increase verb - To make greater in size, amount, or number.
Usage example: we have to increase the number of season-ticket holders if the local sports franchise is to survive
Strengthen is a synonym for increase in enhance topic. In some cases you can use "Strengthen" instead a verb "Increase", when it comes to topics like improve, raise, deepen, enlarge.
Strengthen
Strengthen verb - To increase the ability of (as a muscle) to exert physical force.
Increase is a synonym for strengthen in step up topic. You can use "Increase" instead a verb "Strengthen", if it concerns topics such as enhance, powerful, deepen, enlarge.
Nearby Words: strength, strengthening
Mutual synonyms
Common collocations
Both words in one sentence
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In Stellaris powered exoskeletons are a tech advance that strengthen your armies and increase mineral production (worn by miners?)
Source: Powered Armor -
Later on, you can strengthen your arms via augmentation to greatly increase your capacity, letting you carry multiple heavy weapons, pistols, batteries...you name it.
Source: Hyperspace Arsenal
Cite this Source
Strengthen and Increase. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/increase/strengthen
Increase & Strengthen. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/increase/strengthen>.
Strengthen or Increase. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/increase/strengthen.
Google Ngram Viewer shows how "increase" and "strengthen" have occurred on timeline