shush
[verb]
Synonyms: silence, choke (off), hush, quiet, quieten, shut up, still, suppress, muffle, quelch, repress, squelch, strangle

[TahlilGaran] English Synonym Dictionary ▲

shush /ʃʊʃ/ verb
[Date: 1900-2000; Origin: shh]

1. shush! spoken used to tell someone, especially a child, to be quiet Synonym : shh:
‘Shush!’ said Jerry. ‘Not so loud.’

2. [transitive] to tell someone to be very quiet, especially by putting your fingers against your lips or by saying ‘shush’:
He started to cry and Francesca shushed him.

[TahlilGaran] Dictionary of Contemporary English ▲