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Definitions

cardinal

[kahr-dn-l] / ˈkɑr dn l /
ADJECTIVE
important, key
Synonyms
STRONGEST
overriding
STRONG
basic central chief essential first fundamental leading main primary prime principal ruling
WEAK
basal bottom-line constitutive foremost greatest highest indispensable overruling paramount pivotal preeminent vital
Antonyms
STRONG
additional auxiliary extra inessential inferior last least minor nonessential outside peripheral secondary subordinate trivial unimportant unnecessary
WEAK
insignificant negligible

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Another trip in the works is to Spain, with potential events in Madrid, Barcelona and the Canary Islands, a Spanish cardinal said last month.

From Barron's • Feb. 10, 2026

An American cardinal, Robert Francis Prevost, becomes the 267th pontiff of the global Catholic Church, taking the name of Pope Leo XIV.

From The Wall Street Journal • Dec. 18, 2025

He was named head of the church in New York by Pope Benedict XVI in 2009, who later made him cardinal.

From BBC • Dec. 18, 2025

In turning the Trojans into perennial title contenders, Carroll set out to “put a fence” around the Southland, to keep all of its top prospects at home, in cardinal and gold.

From Los Angeles Times • Dec. 3, 2025

I was still so angry that I was about to violate one of the cardinal rules that Gopal had taught me.

From "The View From Saturday" by E.L. Konigsburg