hush 
(hŭsh)
(hŭsh)v. hushed, hush·ing, hush·es
v.tr.
1. To make silent or quiet.
2. To calm; soothe.
3. To keep from public knowledge; suppress mention of. Often used with up: tried to hush up the damaging details.
v.intr.
To be or become silent or still.
n.
A silence or stillness, especially after noise.
adj.
Archaic
Archaic
Silent; quiet.
[Probably back-formation from Middle English husht, silent, of imitative origin.]