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

While semiconductor makers have benefited from the AI boom, the war in the Middle East has clouded the outlook, disrupting supplies of key materials such as helium that are crucial to chipmaking and pushing up energy costs. —ABC News, 23 Apr. 2026

With more than 100 unique award categories, live musical performances, and unexpected celebrity encounters, this show truly brings the culture’s most crucial moments to life. —Armando Tinoco, Deadline, 23 Apr. 2026

The focus now is on the crucial first test flight of its third version of the Starship rocket, whose launch was already pushed back a month to May. —Thomas Black, Twin Cities, 23 Apr. 2026

Gonzalez will be called upon Friday to lead Orange in a crucial league game. —Steve Fryer, Oc Register, 23 Apr. 2026