Verbs

(v)quieten, hush, quiet, quiesce, quiet down, pipe downbecome quiet or quieter“The audience fell silent when the speaker entered”
(v)calm, calm down, quiet, tranquilize, tranquillize, tranquillise, quieten, lull, stillmake calm or still“quiet the dragons of worry and fear”
(v)hush, quieten, silence, still, shut up, hush upcause to be quiet or not talk“Please silence the children in the church!”