This is the 191st most frequent Hindi word.
कब
"कब" means "when" in English.
'कब' is used as an interrogative word to ask about time.
तुम कब जाओगे?
When will you go?
'कब' is used in an indirect question to refer to time.
मुझे यह नहीं पता कि वह कब आया।
I do not know when he came.
'कब' is used to ask about the starting point of an ongoing activity in time.