A1
to have knowledge or information about something in your mind
Dictionary examples:
I know why teachers love coffee. (0.0)
Do you know why books have pages? (0.0)
I know why cats like boxes. (0.0)
I know why dogs eat socks. (0.0)
Do you know why ice is cold? (0.0)
Do you know why cows can't fly? (0.0)
"What does it cost?" - "Ask Kate. She'll know." (9.7)
I don't know anything about this. (10.1)
She knows the name of every kid in the school. (17.2)
"Where did he go?" - "I don't know." (20.3)
I just knew (that) it was going to be a disaster. (26.8)
We don't know when he's arriving. (30.6)
I don't know what all the fuss is about. (34.1)