Synonyms of crucial

crucial

adjective

ˈkrü-shəl 

as in key

of the greatest possible importance

water is crucial to our survival

Synonyms & Similar Words

• key
• critical
• vital
• essential
• pivotal
• fundamental
• necessary
• basic
• decisive
• elementary
• instrumental
• urgent
• requisite
• life-and-death
• indispensable
• pressing
• weighty

Antonyms & Near Antonyms

• minor
• unimportant
• insignificant
• trivial
• inconsequential

Synonym Chooser

How does the adjective crucial contrast with its synonyms?

The words acute and critical are common synonyms of crucial. While all three words mean "of uncertain outcome," crucial suggests a dividing of the ways and often a test or trial involving the determination of a future course or direction.

a crucial vote

Where would acute be a reasonable alternative to crucial?

While the synonyms acute and crucial are close in meaning, acute stresses intensification of conditions leading to a culmination or breaking point.

an acute housing shortage

How are the words critical and acute related as synonyms of crucial?

Critical adds to acute implications of imminent change, of attendant suspense, and of decisiveness in the outcome.

the war has entered a critical phase

Example Sentences

Recent Examples of crucial

Most noticeably, his 3-point shooting accuracy has risen above 37% in Chicago, a crucial improvement to establish his credibility as a true backcourt threat. —Julia Poe, Chicago Tribune, 5 Mar. 2026

And their tenacity on the other end of the floor was crucial. —Buddy Collings, The Orlando Sentinel, 5 Mar. 2026

Ellis also played a crucial part in the retention of top young talent such as Dowman and Marli Salmon. —James McNicholas, New York Times, 5 Mar. 2026

Finding mentors for training is crucial, Warner said. —ABC News, 5 Mar. 2026