realize
( also -ise ) /ˈrɪəlaɪz ˈरिअलाइज़्/ verb [T] 1 to know and understand that something is true or that something has happened जानना और समझना (सचाई या भौतिक वास्तविकता को)
I’m sorry I mentioned it, I didn’t realize how much it upset you.
Didn’t you realize (that) you needed to bring money?