common cause

Idioms  

1. A joint interest, as in “The common cause against the enemies of piety” (from John Dryden's poem, Religio laici, or a Layman's Faith, 1682). This term originated as to make common cause (with), meaning “to unite one's interest with another's.” In the mid-1900s the name Common Cause was adopted by a liberal lobbying group.

---

Example Sentences

See Examples For:

common cause

Regeneron’s flagship eye drug, Eylea, which has preserved the sight of millions of people with a common cause of blindness and generated roughly 80% of the company’s revenue at its peak, is facing increasing competition.

From The Wall Street Journal ● Jul. 24, 2026

Alzheimer's disease is the most common cause of dementia, and the Alzheimer's Society said it is a common misconception to question whether dementia is a normal part of ageing.

From BBC ● Jun. 5, 2026

Exercising some muscles while ignoring others is a common cause of injury, and any trainer worth their salt will advise fitness enthusiasts to balance their routine.

From Salon ● May 8, 2026

While viral infections are the most common cause in the United States, bacteria, parasites and fungi can also cause the condition.

From Los Angeles Times ● Apr. 28, 2026

"If you and your brother were to make common cause against them—" "I will not treat with Renly," Stannis answered in a tone that brooked no argument.

From "A Clash of Kings" by George R.R. Martin