英语词源字典 - 在线词源网站

counterintelligence (n.)[counterintelligence 词源字典]: also counter-intelligence, 1940, from counter- + intelligence.[counterintelligence etymology, counterintelligence origin, 英语词源]
intelligence (n.): late 14c., "faculty of understanding," from Old French intelligence (12c.), from Latin intelligentia, intellegentia "understanding, power of discerning; art, skill, taste," from intelligentem (nominative intelligens) "discerning," present participle of intelligere "to understand, comprehend," from inter- "between" (see inter-) + legere "choose, pick out, read" (see lecture (n.)).

Meaning superior understanding, sagacity" is from early 15c. Sense of "information, news" first recorded mid-15c., especially "secret information from spies" (1580s). Intelligence quotient first recorded 1921 (see I.Q.).
intelligencer (n.): 1580s, "spy, informant," agent noun from intelligence. Meaning "bringer of news" is from 1630s; as a newspaper name from 1640s.
intelligent (adj.): c. 1500, a back-formation from intelligence or else from Latin intelligentem (nominative intelligens), present participle of intelligere, earlier intellegere (see intelligence). Intelligent design, as a name for an alternative to atheistic cosmology and the theory of evolution, is from 1999. Related: Intelligently.
intelligentsia (n.): "the intellectual class collectively," 1905, from Russian intelligyentsia, from Latin intelligentia (see intelligence). Perhaps via Italian intelligenzia.
intelligibility (n.): 1670s, from intelligible + -ity.
intelligible (adj.): late 14c., "able to understand," from Latin intelligibilis, intellegibilis "that can understand, that can be understood," from intellegere "to understand" (see intelligence). In English, sense of "capable of being understood" first recorded c. 1600. Related: Intelligibly.
unintelligent (adj.): c. 1600, from un- (1) "not" + intelligent (adj.). Related: Unintelligently.
unintelligible (adj.): 1610s, "incapable of being understood," from un- (1) "not" + intelligible. Related: Unintelligibly.
electronic intelligence: "Military intelligence gathered using electronic devices", 1950s; earliest use found in The Zanesville Signal.