A face asking for quiet or silence by raising its index finger over its mouth as if to say "shhh" or "shush".
May be used as a request to the lower volume, or more commonly to ask for metaphorical silence (i.e. to keep a secret).
Shushing Face was approved as part of Unicode 10.0 in 2017 under the name “Face With Finger Covering Closed Lips” and added to Emoji 5.0 in 2017.
🚩 New in 2017. Requires an updated operating system.
🤫 Face With Finger Covering Closed Lips