This is the 243rd most frequent Vietnamese word.
để
"Để" in English means "to let," "to allow," or "in order to," depending on context.
'Để' is used here to mean 'to place or put something somewhere'.
Tôi để sách trên bàn.
I put the book on the table.
'Để' is used here as a connector to indicate purpose or reason, meaning 'so that'.
Tôi mở cửa sổ để căn phòng thoáng hơn.
I opened the window so that the room would be more ventilated.
'Để' is used here to indicate intention or objective, meaning 'in order to'.