The Oxford Thesaurus An A-Z Dictionary of Synonyms - knowv.

1) understand, comprehend, be familiar with, grasp, be acquainted with, be versed or skilled in: Do you know anything about nuclear physics? I know Italian fairly well. She knows how to dance the tango. 2) recognize, identify, recall, remember, recollect: I know him from somewhere. 3) be sure or certain or positive: I knew I was right! I just know I'm going to win the first prize. 4) distinguish, separate, discern, differentiate, recognize, identify: Charles doesn't know right from wrong. 5) be aware or conscious or cognizant of, be informed or advised of, have knowledge of: He knows that he cannot fire her because she knows too much.