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  1. know
  2. verb

    • 1. be aware of through observation, inquiry, or information:

      most people know that CFCs can damage the ozone layer I know what I'm doing
      Synonym : be aware, realize, be conscious, have knowledge, be informed, have information, notice, perceive, see, sense, recognize, understand, appreciate, savvy, latch onto something
    • 2. have knowledge or information concerning:

      I would write to him if I knew his address I know of one local who shot himself
      Synonym : have knowledge of, be aware of, be cognizant of, be informed of, be apprised of
    • 3. be absolutely certain or sure about something:

      I just knew it was something I wanted to do I knew it!
    • 4. have developed a relationship with (someone) through meeting and spending time with them; be familiar or friendly with:

      he knew and respected Laura
      Synonym : be acquainted with, have met, be familiar with, be friends with, be friendly with, be on good terms with, be close to, be intimate with, socialize with, associate with, have dealings with, understand, have insight into, be in sympathy with, empathize with, ken, be thick with
    • 5. have a good command of (a subject or language).

      Synonym : be familiar with, be conversant with, be acquainted with, have knowledge of, be versed in, be knowledgeable about, have mastered, have a grasp of, grasp, understand, comprehend, apprehend, have learned, have memorized, have learned by heart, be clued up on, have something taped
    • 6. recognize (someone or something):

      Isabel couldn't hear the words clearly but she knew the voice
    • 7. be familiar or acquainted with (something):

      a little restaurant she knew near Times Square
    • 8. have personal experience of (an emotion or situation):

      a man who had known better times
      Synonym : experience, have experience of, go through, undergo, live through, meet, meet with, encounter, taste
    • 9. regard or perceive as having a specified characteristic:

      he is also known as an amateur painter
    • 10. give (someone or something) a particular name or title:

      the doctor was universally known as “Hubert.”
    • 11. be able to distinguish one person or thing from (another):

      you are convinced you know your own baby from any other in the world
      Synonym : distinguish, tell apart, differentiate, tell, tell which is which, discriminate, recognize, pick out, identify, make out, discern, see
    • 12. have sexual intercourse with (someone).

  3. Variation

    • v.: verb: know, 3rd person present: knows, gerund or present participle: knowing, past tense: knew, past participle: known

    • verb

      be aware of through observation, inquiry, or information:

      have knowledge or information concerning:

    • past of know
    • past of know
    • noun

      an ignorant person.

      a member of a political party in the US, prominent from 1853 to 1856, that was antagonistic toward Roman Catholics and recent immigrants, and whose members preserved its secrecy by denying its existence.

    • I agree

      I have a new idea or suggestion

    • used to imply that what is being referred to is known to or understood by the listener
    • be aware of information or evidence to the contrary
    • have better knowledge or more appropriate skills
    • noun

      practical knowledge or skill; expertise:
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