Keep quiet bare infinitive
To keep silent.
The teacher said, "Keep silent, John."
Please keep silent when I am talking.
To prevent someone from revealing the information.
She was bribed to keep silent about the personal information of a rapist.
The murder intimidated the witness into keeping silent.
Used to tell someone to keep secret what you're about to say
Very quiet
To be secretly working together
Kept in secret
The verb "keep" should be conjugated according to its tense.
1. To punch a hole in one's ticket to show that they have paid for a ride
2. To do something that allows one to go further in a competition or to be promoted at work
1. Please, tell me if I forget to punch your ticket.
2. With a view to punching my ticket to the final, I did whatever it takes to win this round.