to realize, understand or be aware of something
دانستن, فهمیدن, شناختن, آگاه بودن, متوجه شدن, باخبر بودن
As soon as I walked in the room I knew (that) something was wrong.
‘Martin was lying all the time.’ ‘I should have known.’
I knew perfectly well what she meant.
I know exactly how you feel.
This case is hopeless and he knows it.