know

verb14

1. •
   to have information in your mind about something

   • I know that I’m right and you’re wrong.
   • He knew something terrible was going to happen.
2. •
   To maintain (a belief, a position) subject to a given philosophical definition of knowledge; to hold a justified true belief.
3. •
   To be acquainted or familiar with; to have encountered.

   • I know your mother, but I've never met your father.
   • Borja, do you know Pilar? - Sure, we've actually met before.
4. •
   To understand or have a grasp of through experience or study.

   • Let me do it. I know how it works.
   • She knows how to swim.
5. •
   To be able to play or perform (a song or other piece of music).

   • Do you know "Blueberry Hill"?
6. •
   To be or become aware or cognizant.

   • Did you know Michelle and Jack were getting divorced? ― Yes, I knew.
   • Malware's sometimes been known to sit dormant for a long time.
7. •
   To be aware of; to be cognizant of.

   • Did you know Michelle and Jack were getting divorced? ― Yes, I knew.
   • She knows where I live.
8. •
   To have knowledge; to have information, be informed.

   • It is vital that he not know.
   • She knew of our plan.
9. •
   To have indexed and have information about within one's database.

   • Mmm... Seems you searched for a name that we don't know, we'll send our trained monkeys to check what's in stock. — 2023
10. •
    To be able to distinguish, to discern, particularly by contrast or comparison; to recognize the nature of.

    • I wouldn't know one from the other.
11. •
    To recognize as the same (as someone or something previously encountered) after an absence or change.

    • At nearer view he thought he knew the dead, / And call'd the wretched man to mind. — 1645
12. •
    To experience.

    • Their relationship knew ups and downs.
13. •
    (no longer used) To be acquainted (with another person).

    • You, and I haue knowne sir. — 1606
14. •
    (euphemistic, no longer used) To have sexual relations with. This meaning normally specified in modern English as e.g. to ‘know someone in the biblical sense’ or to ‘know biblically’.

    • AFterwarde the man knewe Heuáh his wife, which cõceiued & bare Káin, & said, I haue obteined a man by yͤ Lord. — 1560

noun2

1. •
   Knowledge; the state of knowing. (Now confined to the fixed phrase in the know.)
2. •
   (rare) Knowledge; the state of knowing.

   • That on the view and know of these Contents, […] He should the bearers put to […] death, […] — 1599

particle1

1. •
   (Singlish) Used at the end of a sentence to draw attention to information one thinks the listener should keep in mind.

   • Make sure you water the plants, know…
   • I was a naval diver know!

verb1

1. •
   To have personal or social connections.

   • Matsuo admitted to the paper that he told Rana, "I know someone, and the TLC's going to get you." Get him it did. — 1996