Related Clues:

• Keep her and keep quiet
• She'll keep quiet
• Keep her but keep quiet
• Either way, it might be for her to keep quiet
• She gets the chance to hold her tongue
• It's 'the word'
• Not blabbing
• The word, as suggested by the saying formed by the ends of this puzzle's four longest answers
• On the q.t
• Amount he regularly gives mum
• Bird wasn't emu in disguise
• Not saying anything
• Mother - quiet!
• Parent - shtoom
• Device for softening musical sound