Thin
Thin verb - To alter (something) for the worse with the addition of foreign or lower-grade substances.
Usage example: thinned the cream with milk but didn't tell anyone
Weaken is a synonym for thin in action topic. In some cases you can use "Weaken" instead a verb "Thin", when it comes to topics like strong, dilute, make diluted or less dense.
Weaken
Weaken verb - To alter (something) for the worse with the addition of foreign or lower-grade substances.
Usage example: weakened the juice with too much water
Thin is a synonym for weaken in strong topic. You can use "Thin" instead a verb "Weaken", if it concerns topics such as reduce, reduce the strength of.
Common collocations
| strength | thin strength | weaken strength |
| protection | thin protection | weaken protection |
| enemy | thin enemy | weaken enemy |
| numbers | thin numbers | weaken numbers |
Both words in one sentence
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Such armor sometimes incorporated shapes that would hinder the wearer, and too much use of embossing technique tended to thin and weaken the steel plates making it less useful as protection.
Source: Scary Impractical Armor
Cite this Source
Weaken and Thin. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/thin/weaken
Thin & Weaken. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/thin/weaken>.
Weaken or Thin. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/thin/weaken.
Google Ngram Viewer shows how "thin" and "weaken" have occurred on timeline