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

Sometimes a crucial piece of information is hiding in a pop-up window. — Allison Johnson, The Verge, 9 Oct. 2026

The news of her award comes at a crucial time for LGBTQ+ youth. — Althea Legaspi, Rolling Stone, 9 Oct. 2026

Their presence there threatens a crucial alternative shipping route to the Strait of Hormuz, where Iranian attacks on ships have curtailed traffic. — Sally Abou Aljoud, Los Angeles Times, 9 Oct. 2026

Their union was crucial to the decision to trade up to select Mahomes in the 2017 NFL Draft and continues to be a distinct force in the success of the Chiefs. — Kansas City Star, 9 Oct. 2026