The quality of being critical, important, or involving careful judgment and evaluation.
From critical (Latin criticus) plus -ness suffix forming abstract nouns. Follows the standard English pattern of adding -ness to adjectives to create noun forms.
English loves redundancy: 'criticality' and 'criticalness' mean almost the same thing, but 'criticalness' feels more personal and 'criticality' more technical—a subtle difference that shows how language develops multiple words for similar concepts.
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