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

The fuel depot is crucial to keeping Port Miami's massive economic engine running. —Manuel Bojorquez, CBS News, 4 June 2026

Last season, Tyler Guyton allowed 31 quarterback pressures in just 10 games, and lowering that number will be crucial in lowering Prescott’s overall cleanliness in the pocket after being pressured the sixth-most of any quarterback last season. —Nick Harris, Fort Worth Star-Telegram, 4 June 2026

His evaluation became crucial evidence that Saenz was too unstable to regain contact with her children. —Shira Moolten, Sun Sentinel, 4 June 2026

But the protest on Saturday will address recent discrepancies in crucial high school and entrance exams conducted by the government, which media reports say have affected millions of students. —Priyanka Salve, CNBC, 4 June 2026