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
Stiff is a synonym for heavy in solid topic. In some cases you can use "Stiff" instead the word "Heavy" as an adjective or a noun, when it comes to topics like tough.
Mutual synonyms
Both words in one sentence
- They felt he should wear a leather trenchcoat like your standard Bad Ass Longcoat, but even garment-weight leather is too heavy and stiff to billow and flow the way they wanted.
Source: Impossibly Cool Clothes - One radio adventure featuring the Fourth Doctor (possibly adapted from one of the lost episodes) also featured a slightly more sensible version; the Sonic Screwdriver can shift the tumblers inside a lock, but can't exert enough force to move a really stiff and heavy door-bolt.
Source: One-Shot Revisionism - Metal Gear Solid can start off slow, stiff and exposition-heavy for some... until the scope of the plot and narrative slowly build up, hitting a spike at the Psycho Mantis battle, culminating into an explosive, emotional climax that few games can compare to.
Source: Slow-Paced Beginning
Cite this Source
Stiff and Heavy. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/heavy/stiff
Heavy & Stiff. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/heavy/stiff>.
Stiff or Heavy. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/heavy/stiff.
Google Ngram Viewer shows how "heavy" and "stiff" have occurred on timeline