Answer: mumstheword

AnswerCrossword Clue
MUMSTHEWORD"Don't tell a soul!"
MUMSTHEWORD"Zip your lip!"
MUMSTHEWORDSurprise-party admonition
MUMSTHEWORD"Ssh!"
MUMSTHEWORD"Shhhh!"
MUMSTHEWORD"Don't tell a soul"
MUMSTHEWORD"Keep it under your hat!"
MUMSTHEWORD"Don't tell!"
MUMSTHEWORDCabalist's caution
MUMSTHEWORDDon't mention the flowers!
MUMSTHEWORDHow drums met unsettling quiet (4, 3, 4)
MUMSTHEWORDSlogan for the discreet
MUMSTHEWORDExpression from Cervantes.
MUMSTHEWORD"Be quiet, florist!"
MUMSTHEWORD"Not a peep!"
MUMSTHEWORD"Hush!" to a florist?
MUMSTHEWORD"Okay, I'll shut up"
MUMSTHEWORDSecret keeper's promise