intelligence (English)

Where does "intelligence" come from?

The English word 'intelligence' was inherited from Middle English 'intelligence', which was borrowed from Old French 'intelligence'[1][2]. The ultimate source is Latin 'intelligentia' or 'intellegentia', an abstract noun derived from the participle 'intelligens' or 'intellegens', meaning 'understanding' or 'discerning'[2][3][5][6]. This participle in turn traces back to the Latin verb 'intellegere', a compound of the prefix 'inter-', meaning 'between', and the verb 'legere', which meant 'to choose, pick out, read'[1][7]. Linguists ultimately trace 'legere' back through Proto-Italic '*legō', meaning 'to care'[1].

Open questions

• The Proto-Italic ancestor '*legō' is an unattested, reconstructed proto-form. [1] [4]

Full etymology tree

• intelligence (English), 'The capacity of mind, especially to understand principles, truths, facts or meanings, acquire knowledge, and apply it to practice; the ability to comprehend and learn; the ability to process sentient experience to generate true beliefs with a justified degree of confidence.'
  • inherited intelligence (Middle English), 'Comprehension, intelligence; the ability to understand.'
    • borrowed intelligence (Old French), 'comprehension'
      • derived intelligentia (Latin), 'alternative form of intellegentia'
        • suffix intelligens (Latin), 'alternative form of intellegens'
          • derived intelligo (Latin), 'alternative form of intellegō'
            • prefix inter- (Latin), 'inter-, between, in between, among, together'
            • prefix legere (Latin), 'second-person singular future passive indicative of legō'
              • inherited *legō (Proto-Italic), 'to care'
                • inherited *h₂leg- (Proto-Indo-European), 'to care for'
        • suffix -ia (Latin), 'Used to form a first declension feminine abstract noun, usually from an adjective ending in -us, or (rarely in later Latin) one ending in -ius, or from a present participle stem, and occasionally from a root noun.'

Ancestors

• intelligence (Middle English)
• intelligence (Old French)
• intelligentia (Latin)
• *legō (Proto-Italic)
• *leǵ- (Proto-Indo-European)

Cognates and doublets

• intelligentsia (English)

Descendants and derived words

• adaptive intelligence (English)
• artificial general intelligence (English)
• artificial intelligence (English)
• business intelligence (English)
• CIA (English)
• CIA (English)
• CIA (English)
• co-intelligence (English)
• communications intelligence (English)
• computational intelligence (English)
• counter intelligence (English)
• counter-intelligence (English)

Sources

1. intelligence (English) - Wiktionary
2. intelligence (Middle English) - Wiktionary
3. intelligentia (Latin) - Wiktionary
4. legō (Proto-Italic) - Wiktionary
5. intellegentia (Latin) - Wiktionary
6. intelligens (Latin) - Wiktionary
7. intellegens (Latin) - Wiktionary

Updated September 2026

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Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris