Heavy
Heavy adjective - Difficult to endure.
Usage example: ignoring common sense, she drank the parasite-infested pond water and paid a heavy penalty for it
Severe is a synonym for heavy in forceful topic. In some cases you can use "Severe" instead an adjective "Heavy", when it comes to topics like grave, big, intense, onerous. popular alternative
Severe
Severe adjective - Difficult to endure.
Usage example: a severe winter that was among the coldest on record
Heavy is a synonym for severe in difficult topic. You can use "Heavy" instead the word "Severe" as an adjective or a noun, if it concerns topics such as grave, big, important, very difficult. popular alternative
Mutual synonyms
Both words in one sentence
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Her ADHD is only referred to once, but it's a severe case, and she receives heavy, heavy medication for it.
Source: Attention Deficit... Ooh, Shiny! - Fourth-tier elemental spells (described as inflicting "severe" damage instead of "heavy") tend to be this.
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Most people would have survived, but Tomlinson had severe liver problems thanks to a lifetime of heavy drinking, and the fall ruptured his liver and killed him.
Source: Death by Falling Over
Cite this Source
Severe and Heavy. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/heavy/severe
Heavy & Severe. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/heavy/severe>.
Severe or Heavy. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/heavy/severe.
Google Ngram Viewer shows how "heavy" and "severe" have occurred on timeline