This is the 634th most frequent Vietnamese word.
khởi
"Khởi" means "to start," "to begin," or "to arise."
The word 'khởi' in this sentence is part of the verb phrase 'khởi động', which means 'to start or to initiate (a device or a process)'. This illustrates its use as a prefix denoting the beginning of an action.
Học sinh vừa khởi động máy tính của mình.
The student just turned on their computer.
Here, 'khởi' is part of the compound verb 'khởi hành', meaning 'to set out or to depart (on a journey)'. It again signifies the initiation of an action, in this case, a journey.
Chúng tôi chuẩn bị khởi hành vào sáng sớm mai.
We are preparing to depart early tomorrow morning.
In this sentence, 'khởi' combines with 'nguồn' in 'khởi nguồn', meaning 'to originate or to start.' This shows its use to indicate the beginning or source of something.