You know what it looks like… but what is it called?
TAKE THE QUIZ“to silence”
The following 2 entries include the term to silence.
reduce (someone) to silence
idiom: to cause (someone) to become suddenly silent
swear (someone) to silence
idiom: to make someone promise not to tell anyone else what was told to them
Love words? Need even more definitions?
Merriam-Webster unabridged