- having good understanding or a high mental capacity; quick to comprehend, as persons or animals: an intelligent student.
- displaying or characterized by quickness of understanding, sound thought, or good judgment: an intelligent reply.
- having the faculty of reasoning and understanding; possessing intelligent beings in outer space.:
- Computers. pertaining to the ability to do data processing locally; smart: An intelligent terminal can edit input before transmission to a host computer.Compare .
- Archaic. having understanding or knowledge (usually followed by of).
- having or indicating intelligence
- having high intelligence; clever
- indicating high intelligence; perceptivean intelligent guess
- guided by reason; rational
- (of computerized functions) able to modify action in the light of ongoing events
- (postpositive foll by of) archaic having knowledge or informationthey were intelligent of his whereabouts
c.1500, a back-formation from intelligence or else from Latin intelligentem (nominative intelligens), present participle of intelligere, earlier intellegere (see ). Intelligent design, as a name for an alternative to atheistic cosmology and the theory of evolution, is from 1999. Related: Intelligently.