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

This kind of communication is crucial for friendships and other relationships. — Eric Thomas, Sun Sentinel, 18 Sep. 2026

Migration is thus a crucial means of enabling people born in the Global South to access lucrative jobs. — J. Toby Reiner, The Conversation, 18 Sep. 2026

With crucial oil export revenues holding up due to high prices from the Iran war, the government is able to find the money to pay for its 4 1/2-year-old invasion of Ukraine, at least for now. — ABC News, 18 Sep. 2026

Under these arrangements, GVH provides crucial engineering work and technical information related to the reactor design. — Aman Tripathi, Interesting Engineering, 17 Sep. 2026