Naomi gripped the bar, glancing back and forth between her hands and making “shush” noises to focus.
When Barack Obama tried to shush "loose talk of war," he got as much traction as a vicar giving a sermon during a soccer riot.
1921, imitative of the command to be quiet (1904), an expansion of sh. Related: Shushed; shushing.
[fr Yiddish, literally, ''push, shove'']