• (RP) IPA: /ˈnɒlɪdʒ/
• (GA) enPR: nŏl′ij, IPA: /ˈnɑlɪdʒ/
• (obsolete) enPR: nōl′ij, IPA: /ˈnoʊlɪdʒ/

knowledge (uncountable)

1. The fact of knowing about something; general understanding or familiarity with a subject, place, situation etc. [from 14th c.]

   His knowledge of Iceland was limited to what he'd seen on the Travel Channel.

2. Awareness of a particular fact or situation; a state of having been informed or made aware of something. [from 14th c.]
   • 1813, Jane Austen, Pride and Prejudice:

     He had always intended to visit him, though to the last always assuring his wife that he should not go; and till the evening after the visit was paid she had no knowledge of it.

3. Intellectual understanding; the state of appreciating truth or information. [from 14th c.]

   Knowledge consists in recognizing the difference between good and bad decisions.

4. Familiarity or understanding of a particular skill, branch of learning etc. [from 14th c.]

   Does your friend have any knowledge of hieroglyphs, perchance?

   A secretary should have a good knowledge of shorthand.

5. (philosophical) Justified true belief
6. (archaic or legal) Sexual intimacy or intercourse (now usually in phrase carnal knowledge). [from 15th c.]
   • 1573, George Gascoigne, "The Adventures of Master F.J.", An Anthology of Elizabethan Prose Fiction:

     Every time that he had knowledge of her he would leave, either in the bed, or in her cushion-cloth, or by her looking-glass, or in some place where she must needs find it, a piece of money […].

7. (obsolete) Information or intelligence about something; notice. [15th-18th c.]
   • 1580, Edward Hayes, "Sir Humphrey Gilbert's Voyage to Newfoundland", Voyages and Travels Ancient and Modern, ed. Charles W Eliot, Cosimo 2005, p. 280:

     Item, if any ship be in danger […], every man to bear towards her, answering her with one light for a short time, and so to put it out again; thereby to give knowledge that they have seen her token.

8. The total of what is known; all information and products of learning. [from 16th c.]

   His library contained the accumulated knowledge of the Greeks and Romans.

9. (countable) Something that can be known; a branch of learning; a piece of information; a science. [from 16th c.]
   • 1603, Michel de Montaigne, chapter 12, in John Florio, transl., The Essayes, […], book II, printed at London: By Val[entine] Simmes for Edward Blount […], OCLC 946730821 ↗:

     he weakened his braines much, as all men doe, who over nicely and greedily will search out those knowledges |||tr=|brackets=|subst=|lit=|nocat=1|footer=}}|}}

     There is a great difference in the delivery of the mathematics, which are the most abstracted of knowledges.

10. (obsolete) Acknowledgement. [14th-16th c.]
11. (obsolete) Notice, awareness. [17th c.]
    • 1611, The Bible, Authorized Version, Ruth II.10:

      Then she fell on her face, and bowed herself to the ground, and said unto him, Why have I found grace in thine eyes, that thou shouldest take knowledge of me, seeing I am a stranger?

12. (UK, informal) The deep familiarity with certain routes and places of interest required by taxicab drivers working in London, England.
    • , Taxi! - The Story of the London Cab

      There is only one sure way to memorise the runs and that is to follow them, either on foot, cycle or motor cycle; hence, the familiar sight of would-be cabbies learning the knowledge during evenings and weekends.

• awareness
• cognizance
• ken
• knowingness
• learning

• ignorance

• know
• knowing

• French: connaissance, science
• German: Wissen, Kenntnis
• Italian: conoscenza
• Portuguese: conhecimento
• Russian: зна́ние
• Spanish: conocimiento

• French: connaissance
• German: Wissen, Kenntnis
• Italian: conoscenza
• Portuguese: conhecimento, ciência
• Russian: зна́ние
• Spanish: conocimiento

• French: connaissances
• Portuguese: conhecimento
• Russian: зна́ние
• Spanish: conocimientos

• French: connaissances, science, savoir, connaissance
• Italian: sapere
• Portuguese: conhecimento
• Russian: зна́ния
• Spanish: conocimiento

knowledge (knowledges, present participle knowledging; past knowledged, past participle knowledged)

1. (obsolete) To confess as true; to acknowledge. [13th-17th c.]
   • 1526, Bible, tr. William Tyndale, Matthew 3:

     Then went oute to hym Jerusalem, and all Jury, and all the region rounde aboute Jordan, and were baptised of hym in Jordan, knoledging their synnes.

1. A course of study which must be completed by prospective London taxi drivers; consists of 320 routes through central London and many significant places.