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1. Cover up a misdemeanour, fault, or error
   "Let's not hush up the crimes of Stalin";
   - whitewash, gloss over, sleek over
    
2. Cause to be quiet or not talk
   "Please hush up the children in the church!";
   - hush, quieten [Brit], silence, still, shut up

Derived forms: hushing up, hushes up

Type of: conquer, cover, cover up, paper over, stamp down, subdue, suppress

Encyclopedia: Hush up