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critical

crit·i·cal

critical

 
pronunciation:
krI tih kl
part of speech: adjective
definition 1: likely to find fault.
She is always critical of the cafeteria food.
synonyms:
harsh, severe, strict
antonyms:
complimentary
similar words:
demanding, negative, rigid
definition 2: of the nature of a crisis; serious or dangerous.
He was rushed to the hospital with a critical illness.
synonyms:
dangerous, grave
antonyms:
mild
similar words:
acute, desperate, dire, hazardous, risky, serious, uncertain, vital
definition 3: very important.
It is critical that you understand my point.
synonyms:
crucial, essential, grave, vital
similar words:
fundamental, imperative, important, indispensable, momentous, necessary
derivation: critically (adv.)