refrain from divulging sensitive information; keep quiet about confidential information;
"Don't tell him any secrets--he cannot keep his mouth shut!"
- Please keep quiet -- I'm trying to get some work done.
- I've decided to resign but I'd prefer you to keep quiet about it.
- Do keep quiet or you'll throw me out in my calculations.
- The doctor ordered the man who had sprained his ankle to keep quiet a few days.
- Ask Tom to keep quiet.
- keep something quiet 对某事保密