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say it: KROO-shuhl
crucial is an adjective meaning "of extreme importance; vital to the resolution of a crisis". It is pronounced /ˈkɹuʃəl/ — KROO-shuhl. It carries 3 recorded senses.
of extreme importance; vital to the resolution of a crisis
“a crucial moment in his career”
“a crucial election”
“a crucial issue for women”
having crucial relevance
“crucial to the case”
“relevant testimony”
of the greatest importance
“the all-important subject of disarmament”
“crucial information”
“in chess cool nerves are of the essence”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for crucial come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.