crucial

Of supreme importance

Crucial means vitally important or decisive—the thing everything else depends on.

A crucial moment determines what follows.

A crucial detail can make or break a case.

Crucial evidence tips the balance.

The word carries weight: if something is crucial, it cannot be overlooked or dismissed.

Her testimony was crucial to the prosecution's case.

essential

vital

Essential or sustaining existence

paramount · fundamental · key · integral · core · requisite · prerequisite · imperative · mandatory · obligatory

foundational

cornerstone

Foundational building block

underpinning · basis · framework · groundwork · pillar · backbone · anchor · fulcrum · hub · nexus

decisive

determinative

Settling a matter conclusively

pivotal · turning · momentous · settling · final · ultimate · binding · irrevocable · game-changing · watershed

Categories
Opposites
importance

crucialunimportant

Lacking significance or weight

trivial · insignificant · inconsequential · minor · negligible

necessity for outcome

crucialunnecessary

Not essential or required

dispensable · optional · expendable · noncrucial · uncritical

consequentiality

crucialinconsequential

Lacking significance or impact

immaterial · irrelevant · meaningless · pointless · negligible

Phrases
Family

excruciating, crucifix, crucially, excruciate, cruciform, cruciate

Familiarity
Top 10,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G